Sildenafil Tablets 25 mg, 50 mg, 100 mg (sil-DEN-a-fil) Treating erectile dysfunction (ED). It may also be used for other conditions as determined by your doctor. Viagra is a phosphodiesterase inhibitor. It works by helping to increase blood flow into the penis during sexual stimulation. This helps you to achieve and maintain an erection. you are taking nitrates (eg, isosorbide, nitroglycerin) in any form (eg, tablet, capsule, patch, ointment) or nitroprusside you use certain recreational drugs called "poppers" (eg, amyl nitrate, butyl nitrate) Contact your doctor or health care provider right away if any of these apply to you. Some medical conditions may interact with Viagra . Tell your doctor or pharmacist if you have any medical conditions, especially if any of the following apply to you: if you are taking any prescription or nonprescription medicine, herbal preparation, or dietary supplement if you have allergies to medicines, foods, or other substances if you have a deformed penis (eg, Peyronie disease, cavernosal fibrosis), blood problems (eg, sickle cell anemia, leukemia, multiple myeloma), or any other condition that may increase the risk of a prolonged erection (eg, priapism) if you have a history of certain eye problems (eg, retinitis pigmentosa, sudden vision loss, optic neuropathy, macular degeneration) if you have a history of liver or kidney problems, high or low blood pressure, ulcers, bleeding problems, heart problems (eg, heart failure, irregular heartbeat, aortic stenosis, angina), or blood vessel problems if you have a history of heart attack, stroke, or life-threatening irregular heartbeat, especially within the past 6 months Some MEDICINES MAY INTERACT with Viagra . Tell your health care provider if you are taking any other medicines, especially any of the following: Alpha-blockers (eg, doxazosin), amlodipine, medicines for high blood pressure, nitrates (eg, isosorbide, nitroglycerin), or nitroprusside because severe low blood pressure with dizziness, lightheadedness, and fainting may occur Azole antifungals (eg, itraconazole), cimetidine, H2 agonists (eg, famotidine), HIV protease inhibitors (eg, ritonavir), macrolide antibiotics (eg, erythromycin), or telithromycin because they may increase the risk of Viagra 's side effects This may not be a complete list of all interactions that may occur. Ask your health care provider if Viagra may interact with other medicines that you take. Check with your health care provider before you start, stop, or change the dose of any medicine. Use Viagra as directed by your doctor. Check the label on the medicine for exact dosing instructions. An extra patient leaflet is available with Viagra . Talk to your pharmacist if you have questions about this information. Take Viagra by mouth with or without food. Viagra may not work as quickly if you take it with a high-fat meal. Viagra is usually taken about 1 hour before sexual activity. However, it may be taken anywhere from 4 hours to ? hour before sexual activity. Talk with your doctor about the best way to take Viagra . Do not take Viagra more often than once daily, or as directed by your doctor. If you miss a dose of Viagra and you still intend to engage in sexual activity, take it as soon as you remember. Continue to take it as directed by your doctor. Ask your health care provider any questions you may have about how to use Viagra . Viagra may cause dizziness, drowsiness, fainting, or blurred vision. These effects may be worse if you take it with alcohol or certain medicines. Use Viagra with caution. Do not drive or perform other possibly unsafe tasks until you know how you react to it. Viagra may cause dizziness, lightheadedness, or fainting; alcohol, hot weather, exercise, or fever may increase these effects. To prevent them, sit up or stand slowly, especially in the morning. Sit or lie down at the first sign of any of these effects. Patients with heart problems who take Viagra may be at increased risk for heart-related side effects, including heart attack or stroke. Symptoms of a heart attack may include chest, shoulder, neck, or jaw pain; numbness of an arm or leg; severe dizziness, headache, nausea, stomach pain, or vomiting; fainting; or vision changes. Symptoms of a stroke may include confusion, vision or speech changes, one-sided weakness, or fainting. Contact your doctor or seek medical attention right away if you experience these symptoms. Viagra may rarely cause a prolonged, painful erection. This could happen even when you are not having sex. If this is not treated right away, it could lead to permanent sexual problems such as impotence. Contact your doctor right away if this happens. Do not use other medicines or treatments for erectile dysfunction while you are taking Viagra . Viagra does not stop the spread of HIV or other sexually transmitted diseases (STDs) to others through sexual contact. Use barrier methods of birth control (eg, condoms) if you have HIV infection or an STD. Viagra will not prevent pregnancy. If your partner may become pregnant and you wish to avoid pregnancy, be sure to use an effective form of birth control. Use Viagra with caution in the ELDERLY; they may be more sensitive to its effects. Viagra is not recommended for use in CHILDREN; safety and effectiveness in children have not been confirmed. PREGNANCY and BREAST-FEEDING: Viagra is not approved for use in women. If you become pregnant, contact your doctor. You will need to discuss the benefits and risks of using Viagra while you are pregnant. It is not known if Viagra is found in breast milk. If you are or will be breast-feeding while you use Viagra , check with your doctor. Discuss any possible risks to your baby. All medicines may cause side effects, but many people have no, or minor, side effects. Diarrhea; dizziness; flushing; headache; heartburn; mild, temporary vision changes (eg, blurred vision, sensitivity to light, blue/green color tint to vision); stuffy nose; upset stomach. Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); chest pain; fainting; fast or irregular heartbeat; painful or prolonged erection; ringing in the ears; seizure; severe or persistent dizziness; severe or persistent vision changes; sudden decrease or loss of vision in one or both eyes; sudden hearing loss. This is not a complete list of all side effects that may occur. If you have questions or need medical advice about side effects, contact your doctor or health care provider. You may report side effects to the FDA at 1-800-FDA-1088 (1-800-332-1088) or at . Contact 1-800-222-1222 (the American Association of Poison Control Centers), your local poison control center ( ), or emergency room immediately. Symptoms may include chest pain; fainting; prolonged erection; severe dizziness. Store Viagra at 77 degrees F (25 degrees C). Brief storage at temperatures between 59 and 86 degrees F (15 and 30 degrees C) is permitted. Store away from heat, moisture, and light. Do not store in the bathroom. Keep Viagra out of the reach of children and away from pets. If you have any questions about Viagra , please talk with your doctor, pharmacist, or other health care provider. Viagra is to be used only by the patient for whom it is prescribed. Do not share it with other people. If your symptoms do not improve or if they become worse, check with your doctor. This information is a summary only. It does not contain all information about Viagra . If you have questions about the medicine you are taking or would like more information, check with your doctor, pharmacist, or other health care provider.
What is Viagra used for? Viagra is used to treat impotence in men. Viagra increases the body’s ability to achieve and maintain an erection during sexual stimulation. Viagra does not protect you from getting sexually transmitted diseases, including HIV. take Viagra? Men who are currently using medicines that contain nitrates, such as nitroglycerin should not use Viagra because taken together they can lower the blood pressure too much. Viagra should not be used by women or children. You should have a complete medical history and exam to determine the cause of your impotence before taking Viagra. Men who have medical conditions that may cause a sustained erection such as sickle cell anemia, leukemia or multiple myeloma or who have an abnormally shaped penis may not be able to take Viagra. There are several medications that are known to interact with Viagra, so be sure to tell your doctor about all medications you are taking including those you can get without a prescription. Viagra has not been studied with other treatments for impotence, so use in combination with other treatments is not recommended. How should I take Viagra? Your healthcare provider may prescribe Viagra as one tablet once a day, about 1 hour before sexual activity. However, Viagra may be taken anywhere from 30 minutes to 4 hours before sexual activity. What are some possible side effects of Viagra? a complete list of side effects reported with Viagra. Your healthcare provider can discuss with you a more complete list of side effects. Viagra is generally well tolerated. If any side effects are experienced, they are usually mild and temporary. The following is a listing of the most common side effects: Visual changes such as mild and temporary changes in blue/green colors or increased sensitivity to light. For more detailed information on Viagra, ask your healthcare provider. More Articles... If you have any questions or comments on senior health nutrition, fitness, etc., go to the is for educational / reference use only.
Lifestyle drugs are medicines that treat conditions attached with lifestyle like weight loss tablets, anti-smoking agents, impotence therapies and hair restorers. According to one statistic, companies have invested over $20 billion in research into such drugs since the 1990s and are expected to increase that amount in the coming years. Because impotence is normally termed as an annoyance rather than a real threat to health, the drugs (in this case Viagra) that treat it are frequently called "lifestyle drugs, though potential new applications could give these compounds lifesaving medical roles in near future. Everyone is talking about Viagra these days. TV shows are interviewing ecstatic customers while newspapers and magazines are analyzing its cultural implications. The internet is spreading information on how to get it, bars and cocktail parties are buzzing with jokes about it. Viagra is more than just a blockbuster drug that treats a widespread sexual ailment, it demonstrates a whole new type of drug that will have bearing on the lifestyle of millions. Viagra is a godsend for men with clinically diagnosed impotence. It is similar to weight loss drugs can be a prominent health boon for the seriously obese. The pivotal factor behind the vast appeal of such drugs is their ability to improve the lives of people with less than severe symptoms. Interestingly, many in the Viagra target audience are sexually potent men who are interested in increasing sexual performance. The new lifestyle drugs could turn the pharmaceutical industry into an engine of growth. Global spending on pharmaceuticals is running at about $300 billion annually. At a time when people lay out $25 to $30 a month on cable television, it seems a distinct possibility that they will be willing to pay as much for a lifestyle drug. Such spending could increase the range of the drug industry in new few years, sending ripple effects through the whole economy. Pfizer's competitors are working overtime to improve on Viagra. The drug started its popularity as a potential angina treatment that, but it also suppressed an important enzyme, giving rise to a firm, sustained erection. The main challenge for competitors of Viagra is to develop medicines that do not produce the side effects of Viagra, which include headache and a blue haze in the patient's vision. The speedy entrance of competing drugs highlights the fact that technology is helping the pharmaceutical industry. Not so long ago, making of new drug would take around 15 years but at present one can make a new drug in the matter of few years.
The latest alert was prompted by a case report in the Journal of Laryngology & Otology of sudden hearing loss in a man taking Viagra. A search of FDA records found 29 similar reports involving ED drug users and a few people who took the drugs during clinical trials. Although hearing loss is common in men in their 50s -- the age group most likely to take ED drugs -- age-related loss tends to be gradual, unlike the kind tied to the warning. The FDA has also issued a hearing-loss warning on Revatio, a blood pressure drug in the same class. Revatio users who experience hearing problems should stay on the drug until they have checked with their doctor. ED drugs, on the market for more than a decade, generally have an excellent safety record. More-common problems include flushing and muscle soreness.
Although erectile dysfunction is a male sexual disorder, it does not only affect the male population. Many women find themselves in a relationship with impotent men. Worse, sex life for most of these couples had been active and healthy prior to the setting in of sexual difficulty for the man. A woman therefore has to work together with her partner to restore his sexual health and potency. The following steps are designed to facilitate successful problem - solving: The first step in addressing any problem, even addictions, is to admit that there indeed is a problem. Many couples choose to be silent about the issue even when both are feeling frustrated and disappointed with what's happening. If having intercourse is important to you, tell your partner about it. Don't pretend it doesn't matter. A couple who wants to restore sexual intercourse after a long period of abstinence has physical and psychological factors to consider. A woman who hasn't had sexual activity for a long time may experience vaginal dryness, loss of vaginal muscle tone and painful intercourse. It is also important for these difficulties to be addressed before resuming sexual intercourse. It is equally important for the couple to be aware of sexual changes in men and women due to aging. On the psychological side, lack of sexual desire, especially on a regular basis, may warrant a visit to a psychologist. Problems such as depression accompanying sexual dysfunction in both men and women have to be dealt with. A couple who is more committed to work with their partners to address sexual difficulty issues is more likely to be successful in solving the problem. A woman has to be equally cooperative and involved as her partner is. Although there is no way to predict one's chances of success from a treatment, the more positive one's response is (with the support of his partner), the greater the likelihood that the treatment will be effective. Visit a physician who specializes in the diagnosis and treatment of sexual dysfunction. A variety of tests will be conducted to determine the underlying causes of the problem. The doctor should be able to tell if the problem is caused by physical or psychological factors. Discuss with your physician the possible treatments you can avail. Communication is an effective tool in dealing with challenges in sexual intimacy. It is important that both consider each other's point of view. Prepare to speak your mind but also prepare to listen. Medical care is essential for those experiencing sexual dysfunction. A visit to a physician is also important as sexual dysfunction may serve as an early warning for other diseases.
A sexual disorder is defined as the inability to enjoy sexual intercourse or having problems in the sex life. A person has difficulty in having or enjoying sex because of these disorders. It does not make any difference in the physical health but it can affect mental state by bringing on panic attacks, anxiety and feelings of depression. Sexual disorders occur in both men and women. It is not easy to diagnose a person with a sexual disorder because not everyone interested in sexual intercourse all the time. Some may not be interested in having sex at all and some have a lower level of desire or sexual need. If there are no symptoms of depression, no relationship problem, but still no interest in sex then, it can be classified as a sexual disorder. Consulting your doctor is the first best step in identifying a sexual disorder. These disorders are quite common and create lot of stress because people feel uncomfortable talking about sexual disorders, even to their doctors. Sexual activity needs comfortable environment, concentration and relaxation. Depending on the cause of sexual disorder, there are various treatments. If it is a physical problem, medication and different therapies can be done. If it is a psychological cause, it is best to consult with sexologists. Sexologists use different therapies to produce interest in sex. Psychotherapies can also be beneficial in this regard. Relationship therapists deal with relationship problems and stress, which may be the cause of the sexual disorder. Vasodilators, Minoxidil, Yohimbine Therapy
When Pfizer released Viagra in 1998, they revolutionized oral medical management for erectile dysfunction. Along with its rival medications Cialis and Levitra, Viagra has become a popular drug of choice against impotence. However, anti - impotence drugs are not just used by older men anymore. A growing number of men under the age of 55 are using the �blockbuster pill'. A study of more than 5 million insured adults in 1998 to 2002 found that the fastest - growing segments of Viagra users were aged 18 to 55. These finding suggest use of Viagra not only as anti - impotence drug but as enhancement or recreational agent. How does anti - impotence pills like Viagra work? These drugs dilate blood vessels in the genital region leading to an increased blood flow and consequently, erection. However, it does very little to libido, sensation and sensuality. The effects of Viagra are noticed after an hour of taking the pill and the ease of erection lasts up to 12 hours. There may be side effects however such as headaches, flushes, nasal congestion or runny nose, malaise, changes in blood pressure, nausea, irregular heartbeats, and chest pain. Furthermore, anti - impotence drugs such as Viagra and Cialis increases the risk of vision loss in impotent men who have a history of hypertension and heart failure. Results of a study conducted by scientists at the University of Alabama in Birmingham showed that men who suffered heart attack were 10 times more likely to have optic nerve damage if they had been taking anti - impotence pills. Dr. Gerald McGwin, the one who headed the study, observed that there is a strong and statistically significant association between the use of Viagra and/or Cialis and non - anteritic anterior ischaemic optic neuropathy (NAION). NAION is the most common cause of acute optic nerve damage for people over 50 years old. It can cause the loss of vision in one or both eyes. There are also other impotent pills in the market which the Food and Drug Administration (FDA) warns the public about. These products, usually available through the internet, illegally contain the same ingredients as the prescription medicines approved by the FDA. Some of the product names listed by FDA are Zimaxx, Libidus, Neophase, Nasutra, Vigor - 25, Actra - Rx, and 4Everon. Tests showed that these products either contain sildenafil, the active ingredient in Viagra, or valdenafil, the active ingredient in Levitra. Dr. Steven Galson, Director of FDA's Center for Drug and Evaluation and Research, warns that these products threaten the public health because they contain undeclared chemicals similar or identical to the ingredients used in prescription medicines approved by the FDA. Furthermore, because you do not have to consult a doctor to buy this, you may not be aware that these ingredients can have dangerous interactions with drugs prescribed for heart disease, and may dangerously lower your blood pressure.
Side effects cannot be anticipated. If any develop or change in intensity, inform your doctor as soon as possible. Only your doctor can determine if it is safe for you to continue taking . Abnormal vision (color tinge, blurring, sensitivity to light),acid indigestion, diarrhea, flushing, headache, nasal congestion, urinary tract infection Abdominal pain,abnormal dreams, abnormal ejaculation, allergic reactions, anxiety, asthma, bloodshot eyes, bone pain, breast enlargement, cataracts, chest pain, chills,coordination problems, cough,depression, difficulty breathing, difficulty swallowing, dilated pupils, dizziness, drowsiness, dry eyes, dry mouth, emotional or mental disturbances, eye inflammation or pain, other eye disorders, fainting,falling, genital problems, gout, gum inflammation, heart problems, increased night-time urination, increased pressure in the eyes, insomnia, itchy skin, joint disease, light sensitivity, loss of bladder control (urinary incontinence), low blood pressure, migraine headache, muscle ache, numbness, oral inflammation, pain, painful erection, prolonged erection, raised skin patches, rapid or throbbing heartbeat, rectal bleeding, respiratory inflammation, ringing in the ears, seizure, sinus and throat inflammation, skin rash, skin ulcer, slow reflexes, stomach or intestinal inflammation, sweating, swelling, thirst, tremor, vomiting, weakness Heart attack, stroke, heart irregularities, dangerous surges in blood pressure, and sudden death have all been reported after use of Viagra, usually in men with existing cardiac risk factors, and typically during or shortly after sex.
There is no foolproof evidence of Viagra not working on women, but according to research carried out on 577 women who had issues with sexual arousal for a time period of at least six months, it has been established that Viagra is not very effective in women. This is because sexual difficulties in women are complex in nature. The women took 10, 50 or 100 milligrams of Viagra one hour before sex for three months. The researchers came to the conclusion that Viagra did not make any sort of difference in terms of greater sexual arousal even though Viagra does enhance blood flow to the woman's genital portion. People are of the view that Viagra does not work on women because they are altogether different from man in terms of their objectives, desires, emotions and at the biochemical level. Female sexuality is quite complex compared to male sexuality so even after wide array of scientific research involving about 3,000 women, Pfizer has not been able to come up with authentic findings. Not so long ago, Pfizer publicly announced in the media that they are completing research of Viagra in women. That does not mean there is no any ray of hope for women. Research is going on continuously in a number of other products for the female libido. Research on postmenopausal women on Viagra has come to the conclusion that the Viagra did have some bearing on the blood flow to the clitoris (quite a number of times uncomfortably so) but did not assist any of the women in getting aroused or feeling more at ease during sex. The multicenter research, which was conducted in Canada, various cities of Europe, and Australia, consists of pre-menopausal and postmenopausal women who have opted for hormone replacement therapy and have been diagnosed with female sexual arousal disorder, a category that falls under the broad umbrella of sexual dysfunction. Interestingly, around twenty eight percent 28% of the women reported hypoactive sexual desire disorder as the main symptom. 17% of the women complained of female orgasmic disorder. 9% women were facing issues due to dyspareunia. A wide array of sexual complaints may have played a prominent role in watering down the effectiveness of Viagra. Only a small chunk of women suffering with sexual dysfunction have poor genital feedback without any issues involving libido or mental arousal. Yet those are the sorts of patients who should get an advantage from taking Viagra. That is where future research will study subgroups of women with arousal disorder, especially those who suffer difficulty in getting extra blood to the front portion of the vagina during sex.
A consistent inability to sustain an erection sufficient for sexual intercourse. Also commonly known as impotence. Medically, the term erectile dysfunction is used to differentiate impotence from other problems that interfere with sexual intercourse The following drugs and medications are in some way related to, or used in the treatment of Impotence. This service should be used as a supplement to, and NOT a substitute for, the expertise, skill, knowledge and judgment of healthcare practitioners. Although erectile dysfunction is a male sexual disorder, it does not only affect the male population. Many women find themselves in a relationship with impotent men. Worse, sex life for most of these couples had been active and healthy prior to the setting in of sexual difficulty for the man. A woman therefore has to work together with her partner to restore his sexual health and potency. The following steps are designed to facilitate successful problem - solving: The first step in addressing any problem, even addictions, is to admit that there indeed is a problem. Many couples choose to be silent about the issue even when both are feeling frustrated and disappointed with what's happening. If having intercourse is important to you, tell your partner about it. Don't pretend it doesn't matter. A couple who wants to restore sexual intercourse after a long period of abstinence has physical and psychological factors to consider. A woman who hasn't had sexual activity for a long time may experience vaginal dryness, loss of vaginal muscle tone and painful intercourse. It is also important for these difficulties to be addressed before resuming sexual intercourse. It is equally important for the couple to be aware of sexual changes in men and women due to aging. On the psychological side, lack of sexual desire, especially on a regular basis, may warrant a visit to a psychologist. Problems such as depression accompanying sexual dysfunction in both men and women have to be dealt with. A couple who is more committed to work with their partners to address sexual difficulty issues is more likely to be successful in solving the problem. A woman has to be equally cooperative and involved as her partner is. Although there is no way to predict one's chances of success from a treatment, the more positive one's response is (with the support of his partner), the greater the likelihood that the treatment will be effective. Visit a physician who specializes in the diagnosis and treatment of sexual dysfunction. A variety of tests will be conducted to determine the underlying causes of the problem. The doctor should be able to tell if the problem is caused by physical or psychological factors. Discuss with your physician the possible treatments you can avail. Communication is an effective tool in dealing with challenges in sexual intimacy. It is important that both consider each other's point of view. Prepare to speak your mind but also prepare to listen. Medical care is essential for those experiencing sexual dysfunction. A visit to a physician is also important as sexual dysfunction may serve as an early warning for other diseases. buy viagra or levitra This medicine is a phosphodiesterase inhibitor used to treat sexual function problems such as impotence or erectile dysfunction. In combination with sexual stimulation, this medicine works by helping the blood flow into the penis to achieve and maintain an erection. This medicine is not intended for use in women or children. This medicine will not protect against sexually transmitted diseases including HIV infection. Use "safe sex" practices such as latex condoms. Contact your doctor or pharmacist for more details. Some medicines or medical conditions may interact with this medicine. INFORM YOUR DOCTOR OR PHARMACIST of all prescription and over-the-counter medicine that you are taking. DO NOT TAKE THIS MEDICINE if you are taking any form of nitroglycerin, (such as tablet, patch, or ointment dose forms) or other nitrates (such as isosorbide), nitroprusside (or any "nitric oxide donor" medicine), or recreational drugs called "poppers" containing amyl or butyl nitrate because very serious interactions may occur. If you are not sure whether a certain medicine is a nitrate, contact your doctor or pharmacist. If you are currently using any of these medicines, tell your doctor or pharmacist before using sildenafil. ADDITIONAL MONITORING OF YOUR DOSE OR CONDITION may be needed if you are taking other medicines for impotence, antifungals (such as itraconazole or ketoconazole), cimetidine, delavirdine, erythromycin, mibefradil, or rifampin. If you are taking an HIV protease inhibitor (such as ritonavir or saquinavir), do not take more than a 25 mg dose of sildenafil in a 48-hour period. If you are taking more than a 25 mg dose of sildenafil and are also taking an alpha-blocker medicine (such as doxazosin, prazosin, or terazosin) for various conditions (such as enlarged prostate), separate the time between taking these medicines by more than 4 hours. DO NOT START OR STOP any medicine without doctor or pharmacist approval. Inform your doctor of any other medical conditions including penis conditions (such as angulation, fibrosis/scarring, or Peyronie's disease), history of painful/prolonged erection (priapism), sickle cell anemia, blood system cancers (such as leukemia or myeloma), vision problems (such as retina diseases like retinitis pigmentosa) or history of vision loss, kidney or liver disease, bleeding disorders, active stomach ulcers, heart problems (such as recent heart attack or irregular heartbeat within past 6 months, heart failure, coronary artery disease with unstable angina, aortic stenosis or idiopathic hypertrophic subaortic stenosis), recent stroke within past 6 months, very high or low blood pressure, or allergies. Contact your doctor or pharmacist if you have any questions or concerns about taking this medicine. Follow the directions for using this medicine provided by your doctor. An additional patient information leaflet is available with this medicine. Read it carefully. Ask your doctor, nurse, or pharmacist any questions that you may have about this medicine. TAKE THIS MEDICINE by mouth as needed between four hours and one-half hour before sexual activity (about 1 hour before is most effective); or take as directed by your doctor. DO NOT TAKE THIS MEDICINE more often than once daily as needed. A high fat meal may delay the time of onset of this medicine. Your dosage is based on your medical condition, your response to therapy, and other medicines you are taking. Consult your doctor or pharmacist for more information. STORE THIS MEDICINE at room temperature 77 degrees F (25 degrees C) in a tightly-closed container, away from heat, moisture, and light. Brief storage between 59 and 86 degrees F (15 and 30 degrees C) is permitted. DO NOT TAKE THIS MEDICINE if you have had an allergic reaction to it in the past or to any other ingredient that is found in it. THIS MEDICINE MAY CAUSE VISION CHANGES. DO NOT DRIVE, OPERATE MACHINERY, OR DO ANYTHING ELSE THAT COULD BE DANGEROUS until you know how you react to this medicine. Using this medicine alone, with other medicines, or with alcohol may lessen your ability to drive or to perform other potentially dangerous tasks. TO MINIMIZE DIZZINESS OR LIGHTHEADEDNESS, sit up or stand slowly when rising from a seated or lying position. Your dose is based on your medical condition, response to therapy, and the other medicines you are taking. DO NOT EXCEED THE RECOMMENDED DOSE without checking with your doctor. Rarely, this medicine may change heart rhythm, especially if taken with other medicines that can change the heart rhythm. This change in heart rhythm can result in serious, rarely fatal, irregular heartbeats. Ask your doctor for more information and if you should stop taking any of your other medicines to reduce the risk of this side effect. BEFORE YOU BEGIN TAKING ANY NEW MEDICINE, either prescription or over-the-counter, check with your doctor or pharmacist. CAUTION IS ADVISED WHEN USING THIS MEDICINE IN THE ELDERLY because they may be more sensitive to the side effects of this medicine. THIS MEDICINE SHOULD NOT BE USED IN WOMEN OR CHILDREN. SIDE EFFECTS that may occur while taking this medicine include headache, flushing, stomach upset, heartburn, nasal stuffiness, diarrhea, dizziness, or lightheadedness. Vision changes such as increased sensitivity to light, blurred vision, or impaired blue/green color discrimination may also occur. If these continue or are bothersome, check with your doctor or pharmacist. CONTACT YOUR DOCTOR IMMEDIATELY if you experience vision loss in one or both eyes, hearing loss, ringing in the ears, or severe or persistent dizziness. Sexual activity may put extra strain on your heart, especially if you have heart problems. If you have heart problems and experience any serious side effects while having sex, stop having sex and tell your doctor immediately. These side effects include severe dizziness, fainting, chest pain, or nausea. In the unlikely event that you have a painful or prolonged erection (lasting more than 4 hours), stop using this medicine and seek immediate medical attention or permanent problems could occur. AN ALLERGIC REACTION TO THIS MEDICINE is unlikely, but seek immediate medical attention if it occurs. Symptoms of an allergic reaction include rash, itching, unusual swelling, severe dizziness, or trouble breathing. If you notice other effects not listed above, contact your doctor, nurse, or pharmacist. If overdose is suspected, contact your local poison control center or emergency room immediately. Symptoms of overdose may include severe dizziness, fainting, or prolonged erection. If your symptoms do not improve or if they become worse, check with your doctor. DO NOT SHARE THIS MEDICINE with others for whom it was not prescribed, since they may have a problem that is not effectively treated with this medicine, or they may have a condition that is complicated by this medicine. DO NOT USE THIS MEDICINE for other health conditions. KEEP THIS MEDICINE out of the reach of children and pets. IF USING THIS MEDICINE FOR AN EXTENDED PERIOD OF TIME, obtain refills before your supply runs out. Copyright 2008 Wolters Kluwer Health, Inc. - This information is not intended to substitute for professional medical advice. Be sure to contact your physician, pharmacist or other health care provider for more information about this medication. By searching these web site pages, you agree to ourviagra Used to treat male erectile dysfunction will not be subsidized by the state, Sweden's Supreme Administrative Court ruled on Friday. and Bayer Schering Pharma slammed the ruling, arguing that half a million Swedish men would be affected by the decision not to subsidize drugs such as Viagra, Cialis and Levitra. In its ruling the court overturned a four year old decision by the County Administrative Court to help cover the costs of Viagra and Cialis for patients suffering from high blood pressure or diabetes, both of which often lead to problems with impotence. "The verdict is deeply unjust for many Swedish men and their partners who suffer as a result of impotence," said Margareta Nilsson, chairwoman of the Swedish Diabetes Association, in a statement. "The decision means that this will become a class issue as those affected will have to finance their own treatment in order to have a functioning sex life," she added. The Supreme Administrative Court said in its ruling that the lack of specialist physicians in many parts of the country made it difficult to make a diagnosis. As such, there was a clear risk that a disproportionate number of patients would be prescribed with the drugs. viagra buy
When we speak of sex drive problems, or dysfunction, we automatically think of males and erectile dysfunction, and omit women from the equation. However, many women experience problems with their �libido' or sexual energy, and this phenomena deserves attention too. Viagra is the most common treatment for erectile dysfunction in males, and has traditionally been recommended for men only, women being advised not to use it. So the main reason for this is lack of empirical research stating otherwise, which is due to the absence of definitive studies on women. Viagra however can work for women, as it increases the blood flow to a woman's genitals (much the same way as with a man's), which boosts their libido. There are important considerations however, which shall be listed below. As Viagra is aimed at men's erectile dysfunction, women are unable to obtain a prescription and buy Viagra from a pharmaceutical store. However generic versions are available on the internet, but as so many are on the market, if in doubt contact the supplier as to whether a product is available. When buying from online pharmacies, it is possible to check their pharmacy ID if concerned about legitimacy. It is important for women to take into consideration possible side effects of Viagra, although not widespread there is still a possibility of them occurring. For instance, some Viagra users have reported dizziness, flushing, loss of vision, and so on. Check all possible side effects before commencing use. Furthermore, Viagra should not be taken alongside any nitrate medicines as this can cause abnormally low blood pressure, so always check! Women, who suffer with a low sex drive often, should seek a long term cure other then Viagra in order to increase their libido and have a permanent effect. Long term Viagra use can result in expense, so if the problem continues regularly, even after Viagra use, women should aim to seek other remedial methods.![]() Is Viagra the Answer for you ? Viagra is not simply a sex pill ...learn its various properties is a pill that not only helps cure erectile dysnfunction but also makes the act of sex more fulfilling. now and know personally how it can help you. Viagra is perhaps one of the most notorious medicines in the market. Considering how integral it is for men's health, psychologically and socially, its funny to note that social and cultural hang-ups still survive in the 21st Century making Viagra, a simple medicine, seem to be a 'drug' that is not mentioned in polite circles. Viagra, is a drug or impotence. Sildenafil is available by prescription only. Viagra can only stimulate if a man is sexually excited. The question is when isn't he sexually excited? Viagra is a medicine, much like Asprin and Panadol that people take to treat their health problems. Erectile Dysfunction is a health problem faced by men. It is prescribed by doctors to help men with erectile problems which can be caused due to age, stress, social pressures or other physiological and psychological reasons. Viagra is not, contrary to popular perception, a sex pill that will help you get bigger erections, act as a love enhancer or protect you against sexually transmitted disease. Viagra is a pill that contains Sildenafil Citrate a chemical that helps treat impotence. Sildenafil Citrate is available under several brand names that vary from Viagra to Revatio and may also be found under its generic name. Commercially speaking Sildenafil citrate's, main competitor is tadalafil [Cialis] and vardenafil [Levitra]. While there maybe many medicines out there that are considered to be alternatives to Viagra, it is that has taken the world by storm and remains the top best seller. 5 print sildenafil citrate order form My girlfriend and I are very sexually active. I am very healthy sexually but when we have relations two or three times in a day, I'm a better lover if I take a Viagra. Is this healthy? Every relationship is different in terms of the frequency of intimacy. Some couples have sexual relations every 10 days, and others may crave intimacy daily or even several times a day. The key here is that both individuals need to feel that their lovemaking frequency is just right. The definition of erectile dysfunction is the inability to achieve or maintain a satisfactory erection for sexual relations. While apparently that is not a problem for your first round of lovemaking, it sounds as though you are improving your performance with Viagra when you and your girlfriend enjoy subsequent intimate relations in a short time period. There is nothing wrong with this approach medically. The important point to realize is that intimacy is physical and psychological. Just be certain that while you are fine-tuning your physical sexual abilities, that you and your girlfriend continue to fine-tune the elements that contribute to your emotional and psychological intimacy. Those elements may be as simple as sharing books, discussing lifelong secrets or becoming wine enthusiasts together. sildenafil citrate information
Viagra has made a significant difference in the quality of life of millions of men and their partners. When the FDA approved the first oral medication for the treatment of erectile dysfunction in 1998, it gave rise to a new world of possibilities that would restore men to healthy sex routine. For plenty of these individuals, the ability to have reliable erections has brought them and their partners’ sexual satisfaction and a tremendous sense of emotional comfort in their lives. Many times, the return to sexual potency greatly enriches overall relationship satisfaction. Thanks to the advantages of Viagra, many men have come to the conclusion that they enjoy sex and had sex more frequently. While Viagra is not an aphrodisiac, men have reported an enhancement in sexual desire and arousal. Some are of the opinion that their orgasms felt more intense and enjoyable. Rather than being directly attached to Viagra, these sorts of opinions are most likely because of an increase in the man's general interest in sex, which is due to their Viagra-assisted reliable erections. Even with the sexual success that having a good erection allows, there are a wide array of psychological and relationship aspects involved in a couple's sexual routine. The continued quality of a couple's sexual routine will still be dependent on past, present and future relationship factors. To illustrate this point, consider The following factors: the sort of changes that occurred in the relationship when, thanks to Viagra, erectile problems were no longer a factor Some couples may enjoy renewed sexual routine, but others might feel that sex will now be required on demand. This can place unnecessary pressure on either partner to perform. If the erectile issues were due to problems between the partners, they need to be addressed. It is not unusual for men to be of the view that everything is in order once modern medicine has restored his erections. This is where work must be done to avoid future problems involving intimacy and communication about sex. Even with the restoration of a man's erections, the same sort of sexual turn-offs and difficulties surrounding sex, (timing, frequency, life-style, routines and methods) can still be crucial issues in judging overall sexual satisfaction. buy viagra on line However discomfiting the commercials, the -- on March 27, 1998 -- is a landmark day in the history of sex. It seemed at the time like a biomedical revolution was upon us all, and about five minutes after word of the magical med went global, the question first was asked: Where is the women's version of Viagra? The short answer: They're still working on it. A bunch of companies have tried and failed to create "pink Viagra," as it's often called. Other companies have drugs in late stages of clinical testing, including a gel that recently began a make-or-break nationwide study with several thousand women. Give us five years, maybe less, say the most optimistic researchers and doctors. Though it's unclear exactly how many women would ask for a prescription, no one doubts that the first company that gets to market a remedy for female sexual dysfunction, as it's formally known, will earn a fortune. But as this race reaches what could be its final lap, not all of the spectators are cheering. Some, in fact, are booing as loudly as they can. A modest-size but fervent group of psychologists, academics and public health advocates contend that FSD isn't an authentic medical condition, or at least not the sort of problem that should be treated with drugs. These aren't the obtuse male physicians who for decades have been telling women distressed by their lack of libido that "it's all in your head." The anti-FSD crowd is mostly women, many of them self-described feminists. The most prominent is Leonore Tiefer, a psychotherapist and clinical associate professor at , who has long decried what she calls "the medicalization of women's sexuality." "Drug companies want to say to women, 'You don't need to know anything; you can have the satisfying sex life that you seek -- people dancing on TV, the whole bit -- without knowing anything. Just ask your doctor,' " she says. "I resent that, because there are specific harms that come from being ignorant and dependent in the world we live in. There may be lots of people who aren't interested in sex, but is there a medical reason for that, and do we diagnose that?" Tiefer's critique centers, in part, on the way that pink Viagra is sure to be marketed -- with ads day and night, suggesting that women who aren't feeling frisky have a medical problem. She and her allies -- organized as the New View Campaign -- are also galled that so much money and media attention are heaped on the lust drug, even before it exists, when for many women the solution to their libido problems isn't that exotic. Maybe they have a partner who hasn't a clue about technique.Maybe they're stressed out. Maybe they can't possibly get in the mood because they're so busy raising children. Therapy, counseling, even free day care, says the New View Campaign, might do more for women's sex lives than any drug company ever could. "People walk out of their doctors' offices with a prescription in hand 85 percent of the time," says Meika Loe, the author of "The Rise of Viagra" and a New View endorser. "But health insurers won't pay if you want to talk to a counselor or if you need advice about how to communicate your sexual desires. We've got a health-care system that is almost entirely focused on medical solutions." On the other side of the FSD divide, allied with the pharmaceutical companies, is a group of physicians who are prescribing off-label treatments for women vexed by their sex lives. (Off-label means the drug hasn't been approved by the FDA for that specific treatment.) The highest-profile of the bunch is Irwin Goldstein, the director of sexual medicine at San Diego's Alvarado Hospital. He and Tiefer have debated the topic of FSD for a decade, but as far as he's concerned, there's really nothing to discuss. He's been using hormones to treat women, and he'll happily put you in touch with patients who will rhapsodize about the results. Women like Virginia, a 60-year-old native of and an artist who, for privacy reasons, asked that her last name be omitted. She'd spent years asking doctors for medical help to boost her sex drive, which had once been voracious. All of them, she says, "rolled their eyes and harrumphed and tried to change the subject." "But when I was younger, a really strong libido was just part of who I was," she goes on. "Losing that was like losing a good friend." Three years ago, she heard Goldstein interviewed on . Within weeks she flew to , the site of his practice at the time, and she soon was taking several hormones. There was tinkering with the combination and the dosage, but a few weeks later she suddenly felt "perky" -- more confident about herself as a sexual being and more attractive. She also started having better sex. 5 link http sildenafil citrate cialisnetwork com generic viagra lowest prices
citrate goldstein sildenafil Both the drugs enhance blood flow to the groin area. The major point of difference is that Cialis remains effective for a 36-hour time period, compared to just four hours with Viagra. In addition, Cialis can take effect slightly faster than Viagra. They each take effect in up to 30 minutes, give or take a few minutes. The best part about Cialis is that it offers the couple more flexibility. You should remember that both of these male impotence drugs have restrictions. First and foremost, men with a high risk of heart attack or stroke should not use them. Also, potential side effects include back pain and muscle aches with Cialis. People interested in using these drugs should read Consumer Reports on Health which indicates that Viagra has a longer track record because it has been on the market since 1998. Both of the drugs need a doctor's prescription and are rather expensive. Many insurance companies cover the cost of Cialis and Viagra, but it is permitted for a limited supply, normally 4 times a week. If you are not sure which treatment to opt for, it is recommended that you take a look at the causes of impotence and the treatments advised. It is also quite important that you check websites that list all the treatments in comparison to each other to decide which is the best treatment for your situation. Since its inception, Viagra has ruled the erectile dysfunction market, but with the release of drugs like Cialis and Levitra, men have many more options to choose from. There is no hiding the fact that all three have been proven very effective, but it is worth pointing out that there are specific attributes to each drug that you may find suit your requirements. These drugs are in a class known as PDE-5 inhibitors. According to one study, they all have been proven to work in 70% of men with various kinds of erectile dysfunction. They all work in the same way; they need sexual stimulation to activate. Viagra, the oldest of this type of drug, has the fastest acting time. It takes only 14 minutes to be absorbed into the body if taken on an empty stomach. Although Viagra has the quickest acting time, its main disadvantage is the decreased absorption with food take. In a normal scenario, it takes around half an hour for the drug to reach its maximum effect. After that it looses half of its maximum effect every 4 hours. Regarding side effects, a person who uses Viagra can expect mild headaches, upset stomach, unusually bright vision and facial flushing. Cialis, on the other hand, has been approved for duration of 36 hours. Some estimates have even stated that it is effective for up to 100 hours, resulting in the nickname, “the weekender”. buy viagra in uk
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HE is only two, but Oliver Sherwood regularly takes Viagra - to keep him alive. The toddler has a rare condition that causes chronic high blood pressure. Something as simple a chest infection could kill him. The pulmonary hypertension, as it is known, can be controlled with four doses of Viagra a day. The drug improves blood flow, which in adults can boost erectile function but in rare cases such as Oliver's can open the veins and capillaries to aid circulation. His mother Sarah, a part-time nurse, said: "We joke when we pick up his drugs that it would be Christmas come early for most people. Obviously the dose isn't high enough to have the effect it would on adults. "Viagra is an expensive drug but it's actually one of the cheapest to treat pulmonary hypertension. "We're just hoping it'll continue to work as he grows a bit older." But Oliver's future could be in doubt because other drugs he could use as he gets older might no longer be funded by the Health Service. Pulmonary hypertension causes the blood pressure in the arteries in the lungs to rise, straining the heart and reducing blood oxygen levels, causing breathlessness and exhaustion. Symptoms include severe coughing and breathing problems as blood fills the lungs, constant nose bleeds, dizziness and chest pains. The condition, which affects 4,000 in Britain, often leads to heart failure. It is so rare that only five children a year are diagnosed with it in the UK. The survival rate is around five years, even with medication such as Oliver, who cannot walk more than a few steps without getting out of breath, takes one tablet of Sildenafil crushed into four 5ml doses a day. Doctors can increase the dose when his condition worsens, but there is no way of telling how much longer the drugs will be effective. As he grows up he will need to switch to more expensive treatments called Epoprostenol and Iloprost to control his condition. But the Government's drug rationing agency, the National Institute for Health and Clinical Excellence, is considering whether to continue prescribing them. Oliver's mother has started a petition calling for the Health Service to keep funding the treatments. Mrs Sherwood, 34, of Hucclecote, Gloucestershire, said: "The only hope we had was that he would be maintained through medication but if anything-happens in the future that hope may be taken away." The Pulmonary Hypertension Association said: "The clinical evidence for this is unfounded and it must be assumed it is based on cost alone." A spokesman for NICE added: "Our review of the evidence suggests that Sildenafil is both clinically effective and cost-effective in treating pulmonary arterial hypertension.". According to recent study, for 1% of men who take viagra, sex comes with nasty side effects that can sometimes lead to an untimely death. however, scientists have never linked the deaths directly to the drug, leaving open the possibility that the physical stress of an amorous routine could be the main cause of the whole issue. scientists studying the blood component known as platelets have stumbled upon evidence that might implicate the drug instead of the sex. platelets are tiny cell-like disks that collect and form blood clots at the site of an injury. overactive platelets can clog blood vessels, which can lead to a heart attack or stroke. viagra enhances blood concentrations of a compound that enhances the blood flow to the penis and stimulates production of an enzyme known as cgmp-dependent protein kinase (pkg). researchers are aware of the fact that pkg keeps platelets from sticking together because they initially developed sildenafil (the main ingredient of viagra) to treat heart disease. the dangers of viagra are becoming increasingly evident: in 2006 alone, the fda received 16 reports of death among men who took the drug and, though there is no direct evidence that proves the direct linkage with the pill, at least seven of these men (the majority of them elderly) died during or after intercourse. some individuals are purchasing viagra as a street drug (given the street name ‘poke’). often, this solves the immediate symptoms, but does not address the root cause and can lead to problems later. there are reports in the media that men are crushing the tablets and snorting them. this sort of routine may get some of the drug into the blood stream quickly, but it has the risk of all of the other chemicals being left in the lungs, resulting in long term health related risks. most importantly, unprescribed users are not aware of the possible side effects of using viagra with other unprescribed drugs. viagra is quite a powerful drug and has a significant bearing on blood pressure. because of this, doctors need to be able to discuss dos and don’ts with a man before he takes viagra. it is worth mentioning that ‘poppers’ (amyl nitrate) also affect blood pressure and that taking the drugs concurrently can lead to heart failure, which can lead to death. viagra does not leave the body instantly so you have to wait at least six hours before risking using amyl nitrate. your doctor should be aware of this precaution and make sure you are not on medications that can lead to problems when using viagra. According to research on mice, Viagra may play a prominent role in reversing growth abnormalities in the heart. Researchers are of the opinion that Viagra reversed the abnormal growth of heart muscles and restored normal heart function to mice with enlarged hearts. A larger-than-normal heart is quite a serious medical condition. Commonly termed as hypertrophy, it is a main feature of heart failure and can be fatal. The condition develops because of chronically uncontrolled high blood pressure. This forces the heart to pump harder to satisfy the body's requirements; to adapt to these high pressures, the muscles of the heart enlarge. Individuals with hypertrophy (enlarged hearts) have a much higher probability of developing heart disease, heart failure or sudden cardiac death. The study states that Viagra may turn out to be an effective treatment for a chronic heart condition. The next point of action will be to conduct research to see if the Viagra will have the same advantageous effect in humans that it had shown in mice. It is also has come to the conclusion that the enzyme pathway blocked by sildenafil (PDE5A), never before known to play a prominent part in the heart, is charged when the heart is exposed to pressure stress and hypertrophied. The findings of the study provide a few of the strongest proofs that blocking the heart's adaptive response to hypertrophy does not harm its function but may improve it. Researchers come to the conclusion that heart function, normally measured by pressure/volume analysis of the muscle's ability to contract and pump blood, surprisingly improved after hypertrophy had been halted and treated. While researchers were of the view that that hypertrophy was an adaptive feedback to pressure stress, the functional gains lasted despite the heart's continued exposure to high blood pressure. Improvements were evident in more than ten measures of heart function, taking into account heart relaxation, cardiac output and heart contractility (which enhanced by staggering 40 percent). Furthermore, these types of improvements were evident even when therapy was deferred and initiated two weeks after hypertrophy had already developed. The study clearly demonstrates that sildenafil can eliminate hypertrophy. Its effects can not only be halted, but also reversed. The findings provide a better understanding of the biological pathways and suggest possible therapies using sildenafil. It has the added advantage of already being termed safe and effective for other medical purposes. buy viagra in spain WSJ's Health Blog offers news and analysis on health and the business of health. The lead writer is Jacob Goldstein. He came to The Wall Street Journal from the Miami Herald, where he was a medical writer. Scott Hensley, who covered the drug industry as a reporter for the Journal for seven years, is the editor and also a contributor. The blog also includes contributions from other staffers at the Journal, WSJ.com and Dow Jones Newswires. Write to us at . citrate free sildenafil Splits, which can be extremely and frustrating!!! The only thing that really ever worked well for me when I had frequent, and deep splits was different brands of "Liquid Bandaid" If you paint some on the split, let it dry for five minutes, then paint on another layer, it ends up sealing the wounds with an airtight, watertight, and hard plastic coating, that stops the , and helps the healing process. All the . I think they come from within, due to cell changes, and must be dealt with like a wound. Try different types of liquid bandaid to find the one that provides the hardest, most quick drying layer of protection. I also found that some had less intense than others, but I guess the odor comes with the territory. Good Luck! Why don't you print out 'some' of the forum commentary for your hubby, that is, the non-depressing, helpful, upbeat, optomistic ones! There's no reason he should not be able to benefit from the forum, and the strong support and knowledgable voices found here! herpes online prescription viagra What is Viagra used for? Viagra is used to treat impotence in men. Viagra increases the body’s ability to achieve and maintain an erection during sexual stimulation. Viagra does not protect you from getting sexually transmitted diseases, including HIV. take Viagra? Men who are currently using medicines that contain nitrates, such as nitroglycerin should not use Viagra because taken together they can lower the blood pressure too much. Viagra should not be used by women or children. In patients taking Viagra, several heart-related side effects have been reported, including heart attack, sudden death, irregular heart rhythm, stroke, chest pain, and increased blood pressure. It is not possible to determine whether these events are directly related to Viagra, to sexual activity, to the patient’s heart condition, to a combination of these factors, or to other factors. taking certain medications at the same time (e.g., ketoconazole, itraconazole, erythromycin and saquinavir). In these patients, the recommended starting dose of Viagra is 25 mg. Heart attack, stroke, or life-threatening irregular heart rhythm within the last 6 months Because Viagra lowers blood pressure, your doctor will evaluate your overall medical condition to determine if Viagra, in combination with sexual activity, could adversely affect you. Viagra can cause a rare but serious condition of prolonged erection (priapism). It is important to contact your health care provider immediately if your erection lasts longer than 4 hours. Men for whom sexual activity is inadvisable may not be good candidates for Viagra. Tell your doctor if you are taking protease inhibitors for the treatment of HIV. You should have a complete medical history and exam to determine the cause of your impotence before taking Viagra. Men who have medical conditions that may cause a sustained erection such as sickle cell anemia, leukemia or multiple myeloma or who have an abnormally shaped penis may not be able to take Viagra. There are several medications that are known to interact with Viagra, so be sure to tell your doctor about all medications you are taking including those you can get without a prescription. Viagra has not been studied with other treatments for impotence, so use in combination with other treatments is not recommended. What are some possible side effects of Viagra? a complete list of side effects reported with Viagra. Your health care provider can discuss with you a more complete list of side effects.) ). The following is a listing of the most common side effects Visual changes such as mild and temporary changes in blue/green colors or increased sensitivity to light. For more detailed information about Viagra, ask your health care provider. order viagra Viagra is giving older men a new sex life, but many wives are upset about it. According to a $600,000 study paid for by the Health Research Council of New Zealand, plenty of women are blaming health care providers for giving their husbands Viagra without considering its effects on them. These women believe men's clinics use Viagra as a quick fix for men instead of assisting couples with other issues in their relationship or just accepting that older people do not require sex as often as younger people. The study was conducted on the basis of direct interviews with 27 women with an average age of 53, and 33 men who were interested in being a part of the study. Officially, more than 15 million people around the world have taken Viagra since its inception in 1998. Despite being a costly affair, people are still fond of this drug. Viagra’s price is $100 for a packet of four pills; each pill can have an effect for up to 12 hours. About a quarter of the women came forward for the research because they were interested in discussing about the detrimental effects of Viagra. The other three quarters of the women came into the study because they were not feeling at ease with all the sex they were compelled to perform after their husbands opted for Viagra. Women told the researchers that they feel unnecessary pressure to have sex at night as well as the next morning so the husband could double their pleasure. A few older women experienced pain during sex due to post menopausal vaginal dryness even when they were using lubricants during sex. The irony is that most of the health providers just treat this as a men’s problem rather than a couple’s problem. It is mandatory that how woman feels should be taken into account. Doctors are of the opinion that when male patients asked for prescription of Viagra, they cannot force them to talk to their partners first. According to doctors, interaction between the partners is extremely crucial in this matter but, though they encourage it among male patients, to implement it rests solely in the hands of male patients. Interestingly, those women who are not interested in having sex more frequently risked being labelled dysfunctional themselves causing some pressure on them to have some medical evaluation. best price for generic viagra pharmacokinetics of sildenafil citrate The latest alert was prompted by a case report in the Journal of Laryngology & Otology of sudden hearing loss in a man taking Viagra. A search of FDA records found 29 similar reports involving ED drug users and a few people who took the drugs during clinical trials. Although hearing loss is common in men in their 50s -- the age group most likely to take ED drugs -- age-related loss tends to be gradual, unlike the kind tied to the warning. The FDA has also issued a hearing-loss warning on Revatio, a blood pressure drug in the same class. Revatio users who experience hearing problems should stay on the drug until they have checked with their doctor. ED drugs, on the market for more than a decade, generally have an excellent safety record. More-common problems include flushing and muscle soreness. generic information viagra There is no foolproof evidence of Viagra not working on women, but according to research carried out on 577 women who had issues with sexual arousal for a time period of at least six months, it has been established that Viagra is not very effective in women. This is because sexual difficulties in women are complex in nature. The women took 10, 50 or 100 milligrams of Viagra one hour before sex for three months. The researchers came to the conclusion that Viagra did not make any sort of difference in terms of greater sexual arousal even though Viagra does enhance blood flow to the woman's genital portion. People are of the view that Viagra does not work on women because they are altogether different from man in terms of their objectives, desires, emotions and at the biochemical level. Female sexuality is quite complex compared to male sexuality so even after wide array of scientific research involving about 3,000 women, Pfizer has not been able to come up with authentic findings. Not so long ago, Pfizer publicly announced in the media that they are completing research of Viagra in women. That does not mean there is no any ray of hope for women. Research is going on continuously in a number of other products for the female libido. Research on postmenopausal women on Viagra has come to the conclusion that the Viagra did have some bearing on the blood flow to the clitoris (quite a number of times uncomfortably so) but did not assist any of the women in getting aroused or feeling more at ease during sex. The multicenter research, which was conducted in Canada, various cities of Europe, and Australia, consists of pre-menopausal and postmenopausal women who have opted for hormone replacement therapy and have been diagnosed with female sexual arousal disorder, a category that falls under the broad umbrella of sexual dysfunction. Interestingly, around twenty eight percent 28% of the women reported hypoactive sexual desire disorder as the main symptom. 17% of the women complained of female orgasmic disorder. 9% women were facing issues due to dyspareunia. A wide array of sexual complaints may have played a prominent role in watering down the effectiveness of Viagra. Only a small chunk of women suffering with sexual dysfunction have poor genital feedback without any issues involving libido or mental arousal. Yet those are the sorts of patients who should get an advantage from taking Viagra. That is where future research will study subgroups of women with arousal disorder, especially those who suffer difficulty in getting extra blood to the front portion of the vagina during sex. canadian generic pharmacy viagra Looking at the psychology of impotence is comparable to taking a trip down the Amazon during the rainy season. It is a topic fraught with hidden currents, treacherous shallows and wide meanderings. Viagra, the little blue pill has given a new life to the treatment of impotence and has a significant bearing on men who are suffering from erectile dysfunction. It is worth noting that just finding a "quick fix" for impotence does not overcome other issues that may have been the cause of the dysfunction before treatment began. Overcoming impotence often gives men unrealistic expectations about their ability to instantly come over their emotional as well as physical problems. For most men, their ability to get an erection and have sex is considered as a important part of their masculinity and potency. It is no surprise that the onset of impotence, even when due to underlying physical condition, can lead to psychological issues that increase the problem of impotence. Generally speaking, performance anxiety is a very real problem for many men. In other words, the fear of not being able to perform, dissatisfaction with penis size and self-consciousness about body appearance can all lead to the thing that most men do not want even in their dreams: failure to get an erection. Most men have an occasional episode of impotence due to anxiety. If erectile dysfunction has been there for considerable amount of time, this anxiety is multiplied. From a physiological point of view, anxiety can effectively prevent a man from becoming aroused and maintaining an erection. All the psychological issues seem to disappear with the help of Viagra, which is why it is the most effective and most prescribed erectile dysfunction treatment on the market. There is no reason to feel awkward if you are having issues getting an erection. Just remember that erectile dysfunction is a common problem and can happen to anyone of any age. When you take Viagra for the first time it provides harder erections and plays a prominent role in maintaining the erection for a longer period of time during sex. As Viagra has been proven safe to use in men who are suffering from heart problems, high cholesterol, diabetes, high blood pressure, prostate problems as well as spinal injury you feel at ease when using it. The best part about Viagra is that it works when you want it to. Studies have shown that it works for most men in as little as fourteen minutes, on average within half an hour, and makes it’s presence felt for at least four hours. sildenafil for pulmonary hypertension Viagra has made a significant difference in the quality of life of millions of men and their partners. When the FDA approved the first oral medication for the treatment of erectile dysfunction in 1998, it gave rise to a new world of possibilities that would restore men to healthy sex routine. For plenty of these individuals, the ability to have reliable erections has brought them and their partners’ sexual satisfaction and a tremendous sense of emotional comfort in their lives. Many times, the return to sexual potency greatly enriches overall relationship satisfaction. Thanks to the advantages of Viagra, many men have come to the conclusion that they enjoy sex and had sex more frequently. While Viagra is not an aphrodisiac, men have reported an enhancement in sexual desire and arousal. Some are of the opinion that their orgasms felt more intense and enjoyable. Rather than being directly attached to Viagra, these sorts of opinions are most likely because of an increase in the man's general interest in sex, which is due to their Viagra-assisted reliable erections. Even with the sexual success that having a good erection allows, there are a wide array of psychological and relationship aspects involved in a couple's sexual routine. The continued quality of a couple's sexual routine will still be dependent on past, present and future relationship factors. To illustrate this point, consider The following factors: the sort of changes that occurred in the relationship when, thanks to Viagra, erectile problems were no longer a factor Some couples may enjoy renewed sexual routine, but others might feel that sex will now be required on demand. This can place unnecessary pressure on either partner to perform. If the erectile issues were due to problems between the partners, they need to be addressed. It is not unusual for men to be of the view that everything is in order once modern medicine has restored his erections. This is where work must be done to avoid future problems involving intimacy and communication about sex. Even with the restoration of a man's erections, the same sort of sexual turn-offs and difficulties surrounding sex, (timing, frequency, life-style, routines and methods) can still be crucial issues in judging overall sexual satisfaction. who can help me to get sildenafil citrate Impotence and erectile dysfunction affect many men, and in recent years, have become more widely discussed. Various treatments have been developed to cure such problems, the most popular and widely available being Viagra. There are more and more alternatives to Viagra appearing on the market, some of which are more reliable and trustworthy than others! Read on to discover a legitimate and safe alternatives to Viagra. Firstly, some men experience side effects from using Viagra. Although this isn't widespread amongst users, Viagra alternatives don't involve any risk of side effects. Side effects such as dizziness, loss of vision, headaches, flushing and low blood pressure can occur. In more extreme cases some men have experienced priapism( a painful condition when a man's penis fails to return to its natural flaccid state. The Viagra alternative extracts such side effects as the non- chemical remedies consist of natural herbal ingredients. Such alternatives are widely available and their increased use by male consumers on the rise. Secondly, such herbal alternatives are available over the counter or on the internet (as are Viagra however), without a prescription, and are relatively cheap, ranging from $1- 1.50 a pill. Generic Viagra treatments however are also available without a prescription, and although are slightly more expensive they still appear to be the most popular choice amongst consumers. Thirdly, an alternative Viagra treatment takes 30- 45 minutes to work, however the length of its effect varies widely. Certain herbal ingredients work effectively such as Epicedium (commonly known as the horny goat weed), which is a great sex drive booster. Viagra however, whilst taking about the same time to have an effect on a man's penis normally lasts for around 1-2 hours (sometimes more) from the time of ingestion, and so guarantees a man sexual pleasure. It is important for each individual male to weigh up the pro's and cons to his preferred treatment of erectile dysfunction, taking into account all the available information. 5 sildenafil citrate tablet If you become dizzy or nauseated, have pain, numbness or tingling in your chest, arms, neck, or jaw during sex, it is of the utmost importance that you stop and call your doctor immediately. You could be having a serious side effect from taking Cialis. Stop using Cialis and get emergency medical assistance from your health provider if you have sudden vision loss. It is also advisable that you get immediate medical assistance if you have any of these signs of an allergic reaction: hives, difficulty breathing, or swelling of your face, lips, tongue, or throat. Chest pain or heavy feeling, pain spreading to the arm or shoulder, nausea, sweating, general ill feeling Swelling in your hands, ankles, or feet Erection that is painful and lasts for around 4 hours. Warmth or redness in your face, neck, or chest Headache, upset stomach and back pain Tadalafil was administered to over 5,700 men (mean age 59, ranging from 19 - 87 years old) during clinical trials all round the world. In this trial, over 1000 patients were treated for 1 year whereas over 1,300 patients were treated for 6 months or more. In placebo controlled, Phase 3 clinical trials, the discontinuation rate because of adverse events in patients treated with tadalafil 10 or 20 mg was 3.1%, which was significantly less than placebo treated patients. In tadalafil clinical pharmacology trials, back pain normally occurred 12 - 24 hours after dosing and often resolved within a mater of two days. Across all research with any tadalafil dose, findings of changes in color vision were rare. Serious cardiovascular issues, including myocardial infarction and sudden cardiac death have been reported post marketing with the use of tadalafil. Many, but not all, of these patients had pre-existing cardiovascular risk issues. Most of these events were reported to occur during or shortly after sexual routine, and some were reported to occur shortly after the use of Cialis. Other adverse events suffer from a lack of clear alternative causation because these reactions were reported voluntarily from a population of uncertain size. This makes it tough to reliably judge their frequency or come up with a causal relationship to drug exposure 5mexican sildenafil citrate
An oral therapy for erectile dysfunction, is the citrate salt of sildenafil, a selective inhibitor of cyclic guanosine monophosphate (cGMP)-specific phosphodiesterase type 5 (PDE5). Sildenafil citrate is designated chemically as 1 - [[3 - (6,7 - dihydro - 1 - methyl - 7 - oxo - 3 - propyl - 1H - pyrazolo[4,3 - d]pyrimidin - 5 - yl) - 4 - ethoxyphenyl]sulfonyl] - 4 - methylpiperazine citrate and has the following structural formula: Sildenafil citrate is a white to off-white crystalline powder with a solubility of 3.5 mg/mL in water and a molecular weight of 666.7. Viagra (sildenafil citrate) is formulated as blue, film-coated rounded-diamond-shaped tablets equivalent to 25 mg, 50 mg and 100 mg of sildenafil for oral administration. In addition to the active ingredient, sildenafil citrate, each tablet contains the following inactive ingredients: microcrystalline cellulose, anhydrous dibasic calcium phosphate, croscarmellose sodium, magnesium stearate, hypromellose, titanium dioxide, lactose, triacetin, and FD & C Blue #2 aluminum lake. The physiologic mechanism of erection of the penis involves release of nitric oxide (NO) in the corpus cavernosum during sexual stimulation. NO then activates the enzyme guanylate cyclase, which results in increased levels of cyclic guanosine monophosphate (cGMP), producing smooth muscle relaxation in the corpus cavernosum and allowing inflow of blood. Sildenafil has no direct relaxant effect on isolated human corpus cavernosum, but enhances the effect of nitric oxide (NO) by inhibiting phosphodiesterase type 5 (PDE5), which is responsible for degradation of cGMP in the corpus cavernosum. When sexual stimulation causes local release of NO, inhibition of PDE5 by sildenafil causes increased levels of cGMP in the corpus cavernosum, resulting in smooth muscle relaxation and inflow of blood to the corpus cavernosum. Sildenafil at recommended doses has no effect in the absence of sexual stimulation. Studies in vitro have shown that sildenafil is selective for PDE5. Its effect is more potent on PDE5 than on other known phosphodiesterases (10-fold for PDE6, >80-fold for PDE1, >700-fold for PDE2, PDE3, PDE4, PDE7, PDE8, PDE9, PDE10, and PDE11). The approximately 4,000-fold selectivity for PDE5 versus PDE3 is important because PDE3 is involved in control of cardiac contractility. Sildenafil is only about 10-fold as potent for PDE5 compared to PDE6, an enzyme found in the retina which is involved in the phototransduction pathway of the retina. This lower selectivity is thought to be the basis for abnormalities related to color vision observed with higher doses or plasma levels (see ). In addition to human corpus cavernosum smooth muscle, PDE5 is also found in lower concentrations in other tissues including platelets, vascular and visceral smooth muscle, and skeletal muscle. The inhibition of PDE5 in these tissues by sildenafil may be the basis for the enhanced platelet antiaggregatory activity of nitric oxide observed in vitro, an inhibition of platelet thrombus formation in vivo and peripheral arterial-venous dilatation in vivo. Viagra is rapidly absorbed after oral administration, with absolute bioavailability of about 40%. Its pharmacokinetics are dose-proportional over the recommended dose range. It is eliminated predominantly by hepatic metabolism (mainly cytochrome P450 3A4) and is converted to an active metabolite with properties similar to the parent, sildenafil. The concomitant use of potent cytochrome P450 3A4 inhibitors (e.g., erythromycin, ketoconazole, itraconazole) as well as the nonspecific CYP inhibitor, cimetidine, is associated with increased plasma levels of sildenafil (see ). Both sildenafil and the metabolite have terminal half lives of about 4 hours. in Healthy Male Volunteers. Viagra is rapidly absorbed. Maximum observed plasma concentrations are reached within 30 to 120 minutes (median 60 minutes) of oral dosing in the fasted state. When Viagra is taken with a high fat meal, the rate of absorption is reduced, with a mean delay in T of 29%. The mean steady state volume of distribution (Vss) for sildenafil is 105 L, indicating distribution into the tissues. Sildenafil and its major circulating N-desmethyl metabolite are both approximately 96% bound to plasma proteins. Protein binding is independent of total drug concentrations. Based upon measurements of sildenafil in semen of healthy volunteers 90 minutes after dosing, less than 0.001% of the administered dose may appear in the semen of patients. Sildenafil is cleared predominantly by the CYP3A4 (major route) and CYP2C9 (minor route) hepatic microsomal isoenzymes. The major circulating metabolite results from N-desmethylation of sildenafil, and is itself further metabolized. This metabolite has a PDE selectivity profile similar to sildenafil and an in vitro potency for PDE5 approximately 50% of the parent drug. Plasma concentrations of this metabolite are approximately 40% of those seen for sildenafil, so that the metabolite accounts for about 20% of sildenafil's pharmacologic effects. After either oral or intravenous administration, sildenafil is excreted as metabolites predominantly in the feces (approximately 80% of administered oral dose) and to a lesser extent in the urine (approximately 13% of the administered oral dose). Similar values for pharmacokinetic parameters were seen in normal volunteers and in the patient population, using a population pharmacokinetic approach. Healthy elderly volunteers (65 years or over) had a reduced clearance of sildenafil, with free plasma concentrations approximately 40% greater than those seen in healthy younger volunteers (18–45 years). In volunteers with mild (CLcr=50–80 mL/min) and moderate (CLcr=30–49 mL/min) renal impairment, the pharmacokinetics of a single oral dose of Viagra (50 mg) were not altered. In volunteers with severe (CLcr=<30 mL/min) renal impairment, sildenafil clearance was reduced, resulting in approximately doubling of AUC and C compared to age-matched volunteers with no renal impairment. In volunteers with hepatic cirrhosis (Child-Pugh A and B), sildenafil clearance was reduced, resulting in increases in AUC (84%) and C (47%) compared to age-matched volunteers with no hepatic impairment. Therefore, age >65, hepatic impairment and severe renal impairment are associated with increased plasma levels of sildenafil. A starting oral dose of 25 mg should be considered in those patients (see ). In eight double-blind, placebo-controlled crossover studies of patients with either organic or psychogenic erectile dysfunction, sexual stimulation resulted in improved erections, as assessed by an objective measurement of hardness and duration of erections (RigiScan ), after Viagra administration compared with placebo. Most studies assessed the efficacy of Viagra approximately 60 minutes post dose. The erectile response, as assessed by RigiScan , generally increased with increasing sildenafil dose and plasma concentration. The time course of effect was examined in one study, showing an effect for up to 4 hours but the response was diminished compared to 2 hours. Single oral doses of sildenafil (100 mg) administered to healthy volunteers produced decreases in supine blood pressure (mean maximum decrease in systolic/diastolic blood pressure of 8.4/5.5 mmHg). The decrease in blood pressure was most notable approximately 1–2 hours after dosing, and was not different than placebo at 8 hours. Similar effects on blood pressure were noted with 25 mg, 50 mg and 100 mg of Viagra, therefore the effects are not related to dose or plasma levels within this dosage range. Larger effects were recorded among patients receiving concomitant nitrates (see ). Systolic Blood Pressure, Healthy Volunteers. Single oral doses of sildenafil up to 100 mg produced no clinically relevant changes in the ECGs of normal male volunteers. Studies have produced relevant data on the effects of Viagra on cardiac output. In one small, open-label, uncontrolled, pilot study, eight patients with stable ischemic heart disease underwent Swan-Ganz catheterization. A total dose of 40 mg sildenafil was administered by four intravenous infusions. The results from this pilot study are shown in Table 1; the mean resting systolic and diastolic blood pressures decreased by 7% and 10% compared to baseline in these patients. Mean resting values for right atrial pressure, pulmonary artery pressure, pulmonary artery occluded pressure and cardiac output decreased by 28%, 28%, 20% and 7% respectively. Even though this total dosage produced plasma sildenafil concentrations which were approximately 2 to 5 times higher than the mean maximum plasma concentrations following a single oral dose of 100 mg in healthy male volunteers, the hemodynamic response to exercise was preserved in these patients. In a double-blind study, 144 patients with erectile dysfunction and chronic stable angina limited by exercise, not receiving chronic oral nitrates, were randomized to a single dose of placebo or Viagra 100 mg 1 hour prior to exercise testing. The primary endpoint was time to limiting angina in the evaluable cohort. The mean times (adjusted for baseline) to onset of limiting angina were 423.6 and 403.7 seconds for sildenafil (N=70) and placebo, respectively. These results demonstrated that the effect of Viagra on the primary endpoint was statistically non-inferior to placebo. At single oral doses of 100 mg and 200 mg, transient dose-related impairment of color discrimination (blue/green) was detected using the Farnsworth-Munsell 100-hue test, with peak effects near the time of peak plasma levels. This finding is consistent with the inhibition of PDE6, which is involved in phototransduction in the retina. An evaluation of visual function at doses up to twice the maximum recommended dose revealed no effects of Viagra on visual acuity, intraocular pressure, or pupillometry. In clinical studies, Viagra was assessed for its effect on the ability of men with erectile dysfunction (ED) to engage in sexual activity and in many cases specifically on the ability to achieve and maintain an erection sufficient for satisfactory sexual activity. Viagra was evaluated primarily at doses of 25 mg, 50 mg and 100 mg in 21 randomized, double-blind, placebo-controlled trials of up to 6 months in duration, using a variety of study designs (fixed dose, titration, parallel, crossover). Viagra was administered to more than 3,000 patients aged 19 to 87 years, with ED of various etiologies (organic, psychogenic, mixed) with a mean duration of 5 years. Viagra demonstrated statistically significant improvement compared to placebo in all 21 studies. The studies that established benefit demonstrated improvements in success rates for sexual intercourse compared with placebo. The effectiveness of Viagra was evaluated in most studies using several assessment instruments. The primary measure in the principal studies was a sexual function questionnaire (the International Index of Erectile Function - IIEF) administered during a 4-week treatment-free run-in period, at baseline, at follow-up visits, and at the end of double-blind, placebo-controlled, at-home treatment. Two of the questions from the IIEF served as primary study endpoints; categorical responses were elicited to questions about (1) the ability to achieve erections sufficient for sexual intercourse and (2) the maintenance of erections after penetration. The patient addressed both questions at the final visit for the last 4 weeks of the study. The possible categorical responses to these questions were (0) no attempted intercourse, (1) never or almost never, (2) a few times, (3) sometimes, (4) most times, and (5) almost always or always. Also collected as part of the IIEF was information about other aspects of sexual function, including information on erectile function, orgasm, desire, satisfaction with intercourse, and overall sexual satisfaction. Sexual function data were also recorded by patients in a daily diary. In addition, patients were asked a global efficacy question and an optional partner questionnaire was administered. The effect on one of the major end points, maintenance of erections after penetration, is shown in Figure 3, for the pooled results of 5 fixed-dose, dose-response studies of greater than one month duration, showing response according to baseline function. Results with all doses have been pooled, but scores showed greater improvement at the 50 and 100 mg doses than at 25 mg. The pattern of responses was similar for the other principal question, the ability to achieve an erection sufficient for intercourse. The titration studies, in which most patients received 100 mg, showed similar results. Figure 3 shows that regardless of the baseline levels of function, subsequent function in patients treated with Viagra was better than that seen in patients treated with placebo. At the same time, on-treatment function was better in treated patients who were less impaired at baseline. Figure 3. Effect of Viagra and Placebo on Maintenance of Erection by Baseline Score. The frequency of patients reporting improvement of erections in response to a global question in four of the randomized, double-blind, parallel, placebo-controlled fixed dose studies (1797 patients) of 12 to 24 weeks duration is shown in Figure 4. These patients had erectile dysfunction at baseline that was characterized by median categorical scores of 2 (a few times) on principal IIEF questions. Erectile dysfunction was attributed to organic (58%; generally not characterized, but including diabetes and excluding spinal cord injury), psychogenic (17%), or mixed (24%) etiologies. Sixty-three percent, 74%, and 82% of the patients on 25 mg, 50 mg and 100 mg of Viagra, respectively, reported an improvement in their erections, compared to 24% on placebo. In the titration studies (n=644) (with most patients eventually receiving 100 mg), results were similar. Figure 4. Percentage of Patients Reporting an Improvement in Erections. The patients in studies had varying degrees of ED. One-third to one-half of the subjects in these studies reported successful intercourse at least once during a 4-week, treatment-free run-in period. In many of the studies, of both fixed dose and titration designs, daily diaries were kept by patients. In these studies, involving about 1600 patients, analyses of patient diaries showed no effect of Viagra on rates of attempted intercourse (about 2 per week), but there was clear treatment-related improvement in sexual function: per patient weekly success rates averaged 1.3 on 50–100 mg of Viagra vs 0.4 on placebo; similarly, group mean success rates (total successes divided by total attempts) were about 66% on Viagra vs about 20% on placebo. During 3 to 6 months of double-blind treatment or longer-term (1 year), open-label studies, few patients withdrew from active treatment for any reason, including lack of effectiveness. At the end of the long-term study, 88% of patients reported that Viagra improved their erections. Men with untreated ED had relatively low baseline scores for all aspects of sexual function measured (again using a 5-point scale) in the IIEF. Viagra improved these aspects of sexual function: frequency, firmness and maintenance of erections; frequency of orgasm; frequency and level of desire; frequency, satisfaction and enjoyment of intercourse; and overall relationship satisfaction. One randomized, double-blind, flexible-dose, placebo-controlled study included only patients with erectile dysfunction attributed to complications of diabetes mellitus (n=268). As in the other titration studies, patients were started on 50 mg and allowed to adjust the dose up to 100 mg or down to 25 mg of Viagra; all patients, however, were receiving 50 mg or 100 mg at the end of the study. There were highly statistically significant improvements on the two principal IIEF questions (frequency of successful penetration during sexual activity and maintenance of erections after penetration) on Viagra compared to placebo. On a global improvement question, 57% of Viagra patients reported improved erections versus 10% on placebo. Diary data indicated that on Viagra, 48% of intercourse attempts were successful versus 12% on placebo. One randomized, double-blind, placebo-controlled, crossover, flexible-dose (up to 100 mg) study of patients with erectile dysfunction resulting from spinal cord injury (n=178) was conducted. The changes from baseline in scoring on the two end point questions (frequency of successful penetration during sexual activity and maintenance of erections after penetration) were highly statistically significantly in favor of Viagra. On a global improvement question, 83% of patients reported improved erections on Viagra versus 12% on placebo. Diary data indicated that on Viagra, 59% of attempts at sexual intercourse were successful compared to 13% on placebo. Across all trials, Viagra improved the erections of 43% of radical prostatectomy patients compared to 15% on placebo. Subgroup analyses of responses to a global improvement question in patients with psychogenic etiology in two fixed-dose studies (total n=179) and two titration studies (total n=149) showed 84% of Viagra patients reported improvement in erections compared with 26% of placebo. The changes from baseline in scoring on the two end point questions (frequency of successful penetration during sexual activity and maintenance of erections after penetration) were highly statistically significantly in favor of Viagra. Diary data in two of the studies (n=178) showed rates of successful intercourse per attempt of 70% for Viagra and 29% for placebo. A review of population subgroups demonstrated efficacy regardless of baseline severity, etiology, race and age. Viagra was effective in a broad range of ED patients, including those with a history of coronary artery disease, hypertension, other cardiac disease, peripheral vascular disease, diabetes mellitus, depression, coronary artery bypass graft (CABG), radical prostatectomy, transurethral resection of the prostate (TURP) and spinal cord injury, and in patients taking antidepressants/antipsychotics and antihypertensives/diuretics. Analysis of the safety database showed no apparent difference in the side effect profile in patients taking Viagra with and without antihypertensive medication. This analysis was performed retrospectively, and was not powered to detect any pre-specified difference in adverse reactions. Viagra is indicated for the treatment of erectile dysfunction. ), Viagra was shown to potentiate the hypotensive effects of nitrates, and its administration to patients who are using organic nitrates, either regularly and/or intermittently, in any form is therefore contraindicated. After patients have taken Viagra, it is unknown when nitrates, if necessary, can be safely administered. Based on the pharmacokinetic profile of a single 100 mg oral dose given to healthy normal volunteers, the plasma levels of sildenafil at 24 hours post dose are approximately 2 ng/mL (compared to peak plasma levels of approximately 440 ng/mL) (see ). In the following patients: age >65, hepatic impairment (e.g., cirrhosis), severe renal impairment (e.g., creatinine clearance <30 mL/min), and concomitant use of potent cytochrome P450 3A4 inhibitors (erythromycin), plasma levels of sildenafil at 24 hours post dose have been found to be 3 to 8 times higher than those seen in healthy volunteers. Although plasma levels of sildenafil at 24 hours post dose are much lower than at peak concentration, it is unknown whether nitrates can be safely coadministered at this time point. Viagra is contraindicated in patients with a known hypersensitivity to any component of the tablet. There is a potential for cardiac risk of sexual activity in patients with preexisting cardiovascular disease. Therefore, treatments for erectile dysfunction, including Viagra, should not be generally used in men for whom sexual activity is inadvisable because of their underlying cardiovascular status. Viagra has systemic vasodilatory properties that resulted in transient decreases in supine blood pressure in healthy volunteers (mean maximum decrease of 8.4/5.5 mmHg), (see ). While this normally would be expected to be of little consequence in most patients, prior to prescribing Viagra, physicians should carefully consider whether their patients with underlying cardiovascular disease could be affected adversely by such vasodilatory effects, especially in combination with sexual activity. Patients with the following underlying conditions can be particularly sensitive to the actions of vasodilators including Viagra – those with left ventricular outflow obstruction (e.g. aortic stenosis, idiopathic hypertrophic subaortic stenosis) and those with severely impaired autonomic control of blood pressure. There is no controlled clinical data on the safety or efficacy of Viagra in the following groups; if prescribed, this should be done with caution. Patients who have suffered a myocardial infarction, stroke, or life-threatening arrhythmia within the last 6 months; Patients with retinitis pigmentosa (a minority of these patients have genetic disorders of retinal phosphodiesterases). Prolonged erection greater than 4 hours and priapism (painful erections greater than 6 hours in duration) have been reported infrequently since market approval of Viagra. In the event of an erection that persists longer than 4 hours, the patient should seek immediate medical assistance. If priapism is not treated immediately, penile tissue damage and permanent loss of potency could result. The concomitant administration of the protease inhibitor ritonavir substantially increases serum concentrations of sildenafil (11-fold increase in AUC). If Viagra is prescribed to patients taking ritonavir, caution should be used. Data from subjects exposed to high systemic levels of sildenafil are limited. Visual disturbances occurred more commonly at higher levels of sildenafil exposure. Decreased blood pressure, syncope, and prolonged erection were reported in some healthy volunteers exposed to high doses of sildenafil (200–800 mg). To decrease the chance of adverse events in patients taking ritonavir, a decrease in sildenafil dosage is recommended (see , ). The evaluation of erectile dysfunction should include a determination of potential underlying causes and the identification of appropriate treatment following a complete medical assessment. Before prescribing Viagra, it is important to note the following: Caution is advised when Phosphodiesterase Type 5 (PDE5) inhibitors are co-administered with alpha-blockers. PDE5 inhibitors, including Viagra, and alpha-adrenergic blocking agents are both vasodilators with blood pressure lowering effects. When vasodilators are used in combination, an additive effect on blood pressure may be anticipated. In some patients, concomitant use of these two drug classes can lower blood pressure significantly (see ) leading to symptomatic hypotension (e.g. dizziness, lightheadedness, fainting). Patients should be stable on alpha-blocker therapy prior to initiating a PDE5 inhibitor. Patients who demonstrate hemodynamic instability on alpha-blocker therapy alone are at increased risk of symptomatic hypotension with concomitant use of PDE5 inhibitors. In those patients who are stable on alpha-blocker therapy, PDE5 inhibitors should be initiated at the lowest dose. In those patients already taking an optimized dose of a PDE5 inhibitor, alpha-blocker therapy should be initiated at the lowest dose. Stepwise increase in alpha-blocker dose may be associated with further lowering of blood pressure when taking a PDE5 inhibitor. Safety of combined use of PDE5 inhibitors and alpha-blockers may be affected by other variables, including intravascular volume depletion and other anti-hypertensive drugs. Viagra has systemic vasodilatory properties and may augment the blood pressure lowering effect of other anti-hypertensive medications. Patients on multiple antihypertensive medications were included in the pivotal clinical trials for Viagra. In a separate drug interaction study, when amlodipine, 5 mg or 10 mg, and Viagra, 100 mg were orally administered concomitantly to hypertensive patients mean additional blood pressure reduction of 8 mmHg systolic and 7 mmHg diastolic were noted (see ). The safety of Viagra is unknown in patients with bleeding disorders and patients with active peptic ulceration. Viagra should be used with caution in patients with anatomical deformation of the penis (such as angulation, cavernosal fibrosis or Peyronie's disease), or in patients who have conditions which may predispose them to priapism (such as sickle cell anemia, multiple myeloma, or leukemia). The safety and efficacy of combinations of Viagra with other treatments for erectile dysfunction have not been studied. Therefore, the use of such combinations is not recommended. In humans, Viagra has no effect on bleeding time when taken alone or with aspirin. In vitro studies with human platelets indicate that sildenafil potentiates the antiaggregatory effect of sodium nitroprusside (a nitric oxide donor). The combination of heparin and Viagra had an additive effect on bleeding time in the anesthetized rabbit, but this interaction has not been studied in humans. Physicians should discuss with patients the contraindication of Viagra with regular and/or intermittent use of organic nitrates. Physicians should advise patients of the potential for Viagra to augment the blood pressure lowering effect of alpha-blockers and anti-hypertensive medications. Concomitant administration of Viagra and an alpha-blocker may lead to symptomatic hypotension in some patients. Therefore, when Viagra is co-administered with alpha-blockers, patients should be stable on alpha-blocker therapy prior to initiating Viagra treatment and Viagra should be initiated at the lowest dose. Physicians should discuss with patients the potential cardiac risk of sexual activity in patients with preexisting cardiovascular risk factors. Patients who experience symptoms (e.g., angina pectoris, dizziness, nausea) upon initiation of sexual activity should be advised to refrain from further activity and should discuss the episode with their physician. Physicians should advise patients to stop use of all PDE5 inhibitors, including Viagra, and seek medical attention in the event of a sudden loss of vision in one or both eyes. Such an event may be a sign of non-arteritic anterior ischemic optic neuropathy (NAION), a cause of decreased vision including permanent loss of vision, that has been reported rarely post-marketing in temporal association with the use of all PDE5 inhibitors. It is not possible to determine whether these events are related directly to the use of PDE5 inhibitors or to other factors. Physicians should also discuss with patients the increased risk of NAION in individuals who have already experienced NAION in one eye, including whether such individuals could be adversely affected by use of vasodilators, such as PDE5 inhibitors (see ). Physicians should advise patients to stop taking PDE5 inhibitors, including Viagra, and seek prompt medical attention in the event of sudden decrease or loss of hearing. These events, which may be accompanied by tinnitus and dizziness, have been reported in temporal association to the intake of PDE5 inhibitors, including Viagra. It is not possible to determine whether these events are related directly to the use of PDE5 inhibitors or to other factors (see , ). Physicians should warn patients that prolonged erections greater than 4 hours and priapism (painful erections greater than 6 hours in duration) have been reported infrequently since market approval of Viagra. In the event of an erection that persists longer than 4 hours, the patient should seek immediate medical assistance. If priapism is not treated immediately, penile tissue damage and permanent loss of potency may result. The use of Viagra offers no protection against sexually transmitted diseases. Counseling of patients about the protective measures necessary to guard against sexually transmitted diseases, including the Human Immunodeficiency Virus (HIV), may be considered. Sildenafil metabolism is principally mediated by the cytochrome P450 (CYP) isoforms 3A4 (major route) and 2C9 (minor route). Therefore, inhibitors of these isoenzymes may reduce sildenafil clearance. Cimetidine (800 mg), a nonspecific CYP inhibitor, caused a 56% increase in plasma sildenafil concentrations when coadministered with Viagra (50 mg) to healthy volunteers. When a single 100 mg dose of Viagra was administered with erythromycin, a specific CYP3A4 inhibitor, at steady state (500 mg bid for 5 days), there was a 182% increase in sildenafil systemic exposure (AUC). In addition, in a study performed in healthy male volunteers, coadministration of the HIV protease inhibitor saquinavir, also a CYP3A4 inhibitor, at steady state (1200 mg tid) with Viagra (100 mg single dose) resulted in a 140% increase in sildenafil C and a 210% increase in sildenafil AUC. Viagra had no effect on saquinavir pharmacokinetics. Stronger CYP3A4 inhibitors such as ketoconazole or itraconazole would be expected to have still greater effects, and population data from patients in clinical trials did indicate a reduction in sildenafil clearance when it was coadministered with CYP3A4 inhibitors (such as ketoconazole, erythromycin, or cimetidine) (see ). In another study in healthy male volunteers, coadministration with the HIV protease inhibitor ritonavir, which is a highly potent P450 inhibitor, at steady state (500 mg bid) with Viagra (100 mg single dose) resulted in a 300% (4-fold) increase in sildenafil C and a 1000% (11-fold) increase in sildenafil plasma AUC. At 24 hours the plasma levels of sildenafil were still approximately 200 ng/mL, compared to approximately 5 ng/mL when sildenafil was dosed alone. This is consistent with ritonavir's marked effects on a broad range of P450 substrates. Viagra had no effect on ritonavir pharmacokinetics (see ). Although the interaction between other protease inhibitors and sildenafil has not been studied, their concomitant use is expected to increase sildenafil levels. In a study of healthy male volunteers, co-administration of sildenafil at steady state (80 mg t.i.d.) with endothelin receptor antagonist bosentan (a moderate inducer of CYP3A4, CYP2C9 and possibly of cytochrome P450 2C19) at steady state (125 mg b.i.d.) resulted in a 63% decrease of sildenafil AUC and a 55% decrease in sildenafil C . Concomitant administration of strong CYP3A4 inducers, such as rifampin, is expected to cause greater decreases in plasma levels of sildenafil. Single doses of antacid (magnesium hydroxide/aluminum hydroxide) did not affect the bioavailability of Viagra. Pharmacokinetic data from patients in clinical trials showed no effect on sildenafil pharmacokinetics of CYP2C9 inhibitors (such as tolbutamide, warfarin), CYP2D6 inhibitors (such as selective serotonin reuptake inhibitors, tricyclic antidepressants), thiazide and related diuretics, ACE inhibitors, and calcium channel blockers. The AUC of the active metabolite, N-desmethyl sildenafil, was increased 62% by loop and potassium-sparing diuretics and 102% by nonspecific beta-blockers. These effects on the metabolite are not expected to be of clinical consequence. Sildenafil is a weak inhibitor of the cytochrome P450 isoforms 1A2, 2C9, 2C19, 2D6, 2E1 and 3A4 (IC50 >150 µM). Given sildenafil peak plasma concentrations of approximately 1 µM after recommended doses, it is unlikely that Viagra will alter the clearance of substrates of these isoenzymes. Three double-blind, placebo-controlled, randomized, two-way crossover studies were conducted to assess the interaction of Viagra with doxazosin, an alpha-adrenergic blocking agent. In the first study, a single oral dose of Viagra 100 mg or matching placebo was administered in a 2-period crossover design to 4 generally healthy males with benign prostatic hyperplasia (BPH). Following at least 14 consecutive daily doses of doxazosin, Viagra 100 mg or matching placebo was administered simultaneously with doxazosin. Following a review of the data from these first 4 subjects (details provided below), the Viagra dose was reduced to 25 mg. Thereafter, 17 subjects were treated with Viagra 25 mg or matching placebo in combination with doxazosin 4 mg (15 subjects) or doxazosin 8mg (2 subjects). The mean subject age was 66.5 years. For the 17 subjects who received Viagra 25 mg and matching placebo, the placebo-subtracted mean maximum decreases from baseline (95% CI) in systolic blood pressure were as follows: Blood pressure was measured immediately pre-dose and at 15, 30, 45 minutes, and 1, 1.5, 2, 2.5, 3, 4, 6 and 8 hours after Viagra or matching placebo. Outliers were defined as subjects with a standing systolic blood pressure of <85 mmHg or a decrease from baseline in standing systolic blood pressure of >30 mmHg at one or more timepoints. There were no subjects treated with Viagra 25 mg who had a standing SBP < 85mmHg. There were three subjects with a decrease from baseline in standing systolic BP >30mmHg following Viagra 25 mg, one subject with a decrease from baseline in standing systolic BP > 30 mmHg following placebo and two subjects with a decrease from baseline in standing systolic BP > 30 mmHg following both Viagra and placebo. No severe adverse events potentially related to blood pressure effects were reported in this group. Of the four subjects who received Viagra 100 mg in the first part of this study, a severe adverse event related to blood pressure effect was reported in one patient (postural hypotension that began 35 minutes after dosing with Viagra with symptoms lasting for 8 hours), and mild adverse events potentially related to blood pressure effects were reported in two others (dizziness, headache and fatigue at 1 hour after dosing; and dizziness, lightheadedness and nausea at 4 hours after dosing). There were no reports of syncope among these patients. For these four subjects, the placebo-subtracted mean maximum decreases from baseline in supine and standing systolic blood pressures were 14.8 mmHg and 21.5 mmHg, respectively. Two of these subjects had a standing SBP < 85mmHg. Both of these subjects were protocol violators, one due to a low baseline standing SBP, and the other due to baseline orthostatic hypotension. In the second study, a single oral dose of Viagra 50 mg or matching placebo was administered in a 2-period crossover design to 20 generally healthy males with BPH. Following at least 14 consecutive days of doxazosin, Viagra 50mg or matching placebo was administered simultaneously with doxazosin 4 mg (17 subjects) or with doxazosin 8 mg (3 subjects). The mean subject age in this study was 63.9 years. Twenty subjects received Viagra 50 mg, but only 19 subjects received matching placebo. One patient discontinued the study prematurely due to an adverse event of hypotension following dosing with Viagra 50 mg. This patient had been taking minoxidil, a potent vasodilator, during the study. For the 19 subjects who received both Viagra and matching placebo, the placebo-subtracted mean maximum decreases from baseline (95% CI) in systolic blood pressure were as follows: Blood pressure was measured after administration of Viagra at the same times as those specified for the first doxazosin study. There were two subjects who had a standing SBP of < 85 mmHg. In these two subjects, hypotension was reported as a moderately severe adverse event, beginning at approximately 1 hour after administration of Viagra 50 mg and resolving after approximately 7.5 hours. There was one subject with a decrease from baseline in standing systolic BP >30mmHg following Viagra 50 mg and one subject with a decrease from baseline in standing systolic BP > 30 mmHg following both Viagra 50 mg and placebo. There were no severe adverse events potentially related to blood pressure and no episodes of syncope reported in this study. In the third study, a single oral dose of Viagra 100 mg or matching placebo was administered in a 3-period crossover design to 20 generally healthy males with BPH. In dose period 1, subjects were administered open-label doxazosin and a single dose of Viagra 50 mg simultaneously, after at least 14 consecutive days of doxazosin. If a subject did not successfully complete this first dosing period, he was discontinued from the study. Subjects who had successfully completed the previous doxazosin interaction study (using Viagra 50 mg), including no significant hemodynamic adverse events, were allowed to skip dose period 1. Treatment with doxazosin continued for at least 7 days after dose period 1. Thereafter, Viagra 100mg or matching placebo was administered simultaneously with doxazosin 4 mg (14 subjects) or doxazosin 8 mg (6 subjects) in standard crossover fashion. The mean subject age in this study was 66.4 years. Twenty-five subjects were screened. Two were discontinued after study period 1: one failed to meet pre-dose screening qualifications and the other experienced symptomatic hypotension as a moderately severe adverse event 30 minutes after dosing with open-label Viagra 50 mg. Of the twenty subjects who were ultimately assigned to treatment, a total of 13 subjects successfully completed dose period 1, and seven had successfully completed the previous doxazosin study (using Viagra 50 mg). For the 20 subjects who received Viagra 100 mg and matching placebo, the placebo-subtracted mean maximum decreases from baseline (95% CI) in systolic blood pressure were as follows: Blood pressure was measured after administration of Viagra at the same times as those specified for the previous doxazosin studies. There were three subjects who had a standing SBP of < 85 mmHg. All three were taking Viagra 100 mg, and all three reported mild adverse events at the time of reductions in standing SBP, including vasodilation and lightheadedness. There were four subjects with a decrease from baseline in standing systolic BP >30mmHg following Viagra 100 mg, one subject with a decrease from baseline in standing systolic BP > 30 mmHg following placebo and one subject with a decrease from baseline in standing systolic BP > 30 mmHg following both Viagra and placebo. While there were no severe adverse events potentially related to blood pressure reported in this study, one subject reported moderate vasodilatation after both Viagra 50 mg and 100 mg. There were no episodes of syncope reported in this study. When Viagra 100 mg oral was coadministered with amlodipine, 5 mg or 10 mg oral, to hypertensive patients, the mean additional reduction on supine blood pressure was 8 mmHg systolic and 7 mmHg diastolic. No significant interactions were shown with tolbutamide (250 mg) or warfarin (40 mg), both of which are metabolized by CYP2C9. Viagra (50 mg) did not potentiate the increase in bleeding time caused by aspirin (150 mg). Viagra (50 mg) did not potentiate the hypotensive effect of alcohol in healthy volunteers with mean maximum blood alcohol levels of 0.08%. In a study of healthy male volunteers, sildenafil (100 mg) did not affect the steady state pharmacokinetics of the HIV protease inhibitors, saquinavir and ritonavir, both of which are CYP3A4 substrates. Sildenafil at steady state (80 mg t.i.d.) resulted in a 50% increase in AUC and a 42% increase in C of bosentan (125 mg b.i.d.). Carcinogenesis, Mutagenesis, Impairment of Fertility Sildenafil was not carcinogenic when administered to rats for 24 months at a dose resulting in total systemic drug exposure (AUCs) for unbound sildenafil and its major metabolite of 29- and 42-times, for male and female rats, respectively, the exposures observed in human males given the Maximum Recommended Human Dose (MRHD) of 100 mg. Sildenafil was not carcinogenic when administered to mice for 18–21 months at dosages up to the Maximum Tolerated Dose (MTD) of 10 mg/kg/day, approximately 0.6 times the MRHD on a mg/m basis. Sildenafil was negative in in vitro bacterial and Chinese hamster ovary cell assays to detect mutagenicity, and in vitro human lymphocytes and in vivo mouse micronucleus assays to detect clastogenicity. There was no impairment of fertility in rats given sildenafil up to 60 mg/kg/day for 36 days to females and 102 days to males, a dose producing an AUC value of more than 25 times the human male AUC. There was no effect on sperm motility or morphology after single 100 mg oral doses of Viagra in healthy volunteers. Pregnancy, Nursing Mothers and Pediatric Use Viagra is not indicated for use in newborns, children, or women. No evidence of teratogenicity, embryotoxicity or fetotoxicity was observed in rats and rabbits which received up to 200 mg/kg/day during organogenesis. These doses represent, respectively, about 20 and 40 times the MRHD on a mg/m basis in a 50 kg subject. In the rat pre- and postnatal development study, the no observed adverse effect dose was 30 mg/kg/day given for 36 days. In the nonpregnant rat the AUC at this dose was about 20 times human AUC. There are no adequate and well-controlled studies of sildenafil in pregnant women. ). Since higher plasma levels may increase both the efficacy and incidence of adverse events, a starting dose of 25 mg should be considered (see ). Viagra was administered to over 3700 patients (aged 19–87 years) during pre-marketing clinical trials worldwide. Over 550 patients were treated for longer than one year. In placebo-controlled clinical studies, the discontinuation rate due to adverse events for Viagra (2.5%) was not significantly different from placebo (2.3%). The adverse events were generally transient and mild to moderate in nature. In trials of all designs, adverse events reported by patients receiving Viagra were generally similar. In fixed-dose studies, the incidence of some adverse events increased with dose. The nature of the adverse events in flexible-dose studies, which more closely reflect the recommended dosage regimen, was similar to that for fixed-dose studies. When Viagra was taken as recommended (on an as-needed basis) in flexible-dose, placebo-controlled clinical trials, the following adverse events were reported: Other adverse reactions occurred at a rate of >2%, but equally common on placebo: respiratory tract infection, back pain, flu syndrome, and arthralgia. In fixed-dose studies, dyspepsia (17%) and abnormal vision (11%) were more common at 100 mg than at lower doses. At doses above the recommended dose range, adverse events were similar to those detailed above but generally were reported more frequently. The following events occurred in <2% of patients in controlled clinical trials; a causal relationship to Viagra is uncertain. Reported events include those with a plausible relation to drug use; omitted are minor events and reports too imprecise to be meaningful: Body as a whole: face edema, photosensitivity reaction, shock, asthenia, pain, chills, accidental fall, abdominal pain, allergic reaction, chest pain, accidental injury. Cardiovascular: angina pectoris, AV block, migraine, syncope, tachycardia, palpitation, hypotension, postural hypotension, myocardial ischemia, cerebral thrombosis, cardiac arrest, heart failure, abnormal electrocardiogram, cardiomyopathy. Digestive: vomiting, glossitis, colitis, dysphagia, gastritis, gastroenteritis, esophagitis, stomatitis, dry mouth, liver function tests abnormal, rectal hemorrhage, gingivitis. Hemic and Lymphatic: anemia and leukopenia. Metabolic and Nutritional: thirst, edema, gout, unstable diabetes, hyperglycemia, peripheral edema, hyperuricemia, hypoglycemic reaction, hypernatremia. Musculoskeletal: arthritis, arthrosis, myalgia, tendon rupture, tenosynovitis, bone pain, myasthenia, synovitis. Nervous: ataxia, hypertonia, neuralgia, neuropathy, paresthesia, tremor, vertigo, depression, insomnia, somnolence, abnormal dreams, reflexes decreased, hypesthesia. Respiratory: asthma, dyspnea, laryngitis, pharyngitis, sinusitis, bronchitis, sputum increased, cough increased. Skin and Appendages: urticaria, herpes simplex, pruritus, sweating, skin ulcer, contact dermatitis, exfoliative dermatitis. Special Senses: sudden decrease or loss of hearing, mydriasis, conjunctivitis, photophobia, tinnitus, eye pain, ear pain, eye hemorrhage, cataract, dry eyes. Urogenital: cystitis, nocturia, urinary frequency, breast enlargement, urinary incontinence, abnormal ejaculation, genital edema and anorgasmia. Serious cardiovascular, cerebrovascular, and vascular events, including myocardial infarction, sudden cardiac death, ventricular arrhythmia, cerebrovascular hemorrhage, transient ischemic attack, hypertension, subarachnoid and intracerebral hemorrhages, and pulmonary hemorrhage have been reported post-marketing in temporal association |
