Sildenafil (Viagra) is used to treat erectile dysfunction (impotence; inability to get or keep an erection) in men. Sildenafil (Revatio) is used to improve the ability to exercise in adults with pulmonary arterial hypertension (PAH; high blood pressure in the vessels carrying blood to the lungs, causing shortness of breath, dizziness, and tiredness). Children should not usually take sildenafil, but in some cases, a doctor may decide that sildenafil (Revatio) is the best medication to treat a child's condition. Sildenafil is in a class of medications called phosphodiesterase (PDE) inhibitors. Sildenafil treats erectile dysfunction by increasing blood flow to the penis during sexual stimulation. Sildenafil treats PAH by relaxing the blood vessels in the lungs to allow blood to flow easily. If you are taking sildenafil to treat erectile dysfunction, you should know that it does not cure erectile dysfunction or increase sexual desire. Sildenafil does not prevent pregnancy or the spread of sexually transmitted diseases such as human immunodeficiency virus (HIV). April 10, 2000 (Mill Valley, Calif.) -- In his early 40s, Ron Hanson was too young to be having trouble getting and sustaining erections. But like many men, he was too embarrassed at first to talk about the problem. Hanson (not his real name) waited seven years to see a urologist. By the time he spoke up, erectile dysfunction had become a household word, thanks to the popularity of the drug Viagra. But the widely touted drug, Hanson soon learned, doesn't work for everyone. When Viagra (sildenafil) hit the market in 1998, some men thought it was the long-awaited answer to their problems. According to the Grey Clinic in Indianapolis, which specializes in erectile dysfunction, 17% of men between 18 and 55 experience occasional impotence, while 6% have regular erectile difficulties. For men over 55, that number jumps to about one in three.
As you probably know, Revatio contains the exact active ingredient as Viagra, known as Sildenafil. Revatio however, is only indicated for pulmonary hypertension and comes in a dose of 20 mg vs the higher strengths of Viagra. Revatio is available generically and therefore is seen often as an attractive option for Viagra users due to the relative lower cost of generic Revatio vs. However, as you mentioned, many doctors are very hesitant to prescribe Revatio for erectile dysfunction patients. This hesitancy is well founded and very understandable from the doctors points of view. To prescribe Revatio for erectile dysfunction would technically mean the doctor is prescribing off label. Off label prescribing means that they are prescribing a drug for an un-approved indication (as odd as that is in the situation). If some odd adverse reaction were to happen to a patient, the doctor may be liable for using an off label drug. The primary indication of sildenafil is treatment of erectile dysfunction (inability to sustain a satisfactory erection to complete intercourse). Its use is now one of the standard treatments for erectile dysfunction, including for men with diabetes mellitus. Rare but serious adverse effects found through postmarketing surveillance include prolonged erections, severe low blood pressure, myocardial infarction (heart attack), ventricular arrhythmias, stroke, increased intraocular pressure, and sudden hearing loss. Care should be exercised by people who are also taking protease inhibitors for the treatment of HIV infection. Protease inhibitors inhibit the metabolism of sildenafil, effectively multiplying the plasma levels of sildenafil, increasing the incidence and severity of side effects. Those using protease inhibitors are recommended to limit their use of sildenafil to no more than one 25 mg dose every 48 hours. blocker (typically prescribed for hypertension or for urologic conditions, such as benign prostatic hypertrophy) at the same time may lead to low blood pressure, but this effect does not occur if they are taken at least 4 hours apart.
Sildenafil is a medication used to treat erectile dysfunction. Erectile dysfunction is the inability to get and keep an erection in men. Erectile dysfunction, sometimes called impotence, has several causes. Viagra is one of the best and most popular medicines to treat erectile dysfunction or impotence. Viagra belongs to the Sildenafil brand. By increasing the blood flow in your penis, Viagra helps you to get a hard erection when you are suffering from erectile dysfunction.