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Viagra


About Viagra

      Also read about Avanafil, a new trial medication for Erectile Dysfunction claiming to work in as little as 15 minutes.

      Sildenafil (Viagra) was approved by the FDA in 1998. Viagra offers the first oral medication for the treatment of erectile dysfunction. Sildenafil works by enhancing the effects of nitric oxide. Nitric oxide is a chemical that relaxes the muscles in the penis during sexual arousal. Enhancing the effects of nitric oxide causes increased blood flow to the penis. This enables a man to get and maintain an erection. Viagra is taken orally 30-60 minutes prior to sexual activity, and millions of men have benefited from it's effects.

      Over 7 million American men are currently using Viagra to improve their sexual function Viagra is the most frequently prescribed treatment for erectile dysfunction. Over 30 million American men experience erectile dysfunction at some time in their lives. 82% of patients who take Viagra experience an improvement in their erections, and a corresponding improvement in their sexual lives. This translates into more than 4 out of every 5 couples who use Viagra reaping benefits from it. Viagra has proven effective in literally thousands of clinical studies and trials.



How does Viagra work?

      In many men experiencing erectile dysfunction, Viagra helps the body's natural erection process. When a man is sexually aroused, the penis will fill with a sufficient quantity of blood to cause an erection. During sexual arousal, the arteries in the penis relax and widen, allowing more blood to flow into the penis. As the arteries in the penis expand and harden, the veins that normally carry blood away from the penis become compressed, thus restricting the blood flow out of the penis. With more blood flowing in and less flowing out, the penis enlarges and this results in an erection. Viagra increases blood flow to the penis, so that when a man is sexually aroused, he can get and keep an erection. When the sexual encounter is over, the erection goes away.

Sildenafil

The active ingredient in Viagra is Sildenafil Citrate. Sildenafil (Viagra) is used as a treatment for men experiencing erectile dysfunction (difficulty maintaining an erection). Sildenafil works on enzymes of the body called phosphodiesterases and improves a man's response to sexual stimulation. Sildenafil works to control the enzyme, and by doing so regulates the blood flow out of the penis. This enables the individual to maintain an erection. These enzymes work primarily in the penis, so the action of Viagra is almost exclusively limited to the penis... Other common drugs known to do similar work as Viagra are Cialis and Levitra






The U.S. Department of Health and Human Services, Food and Drug Administration (FDA) offers drug information about Viagra and other FDA approved drugs. Pfizer, the makers of Viagra, offer resources and information about erectile dysfunction and Viagra.




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