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Viagra |
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ViagraFirst oral drug for male impotence, generic name sildenafil. Before the FDA approved Viagra in 1998, impotence was treated with surgical implants, suppositories, pumps, and drugs injected into the penis. Taken as a pill shortly before sexual intercourse, Viagra selectively dilates blood vessels in the penis, improving blood flow and allowing a natural sexual response. It works in about 70% of cases; it should not be used by anyone taking nitroglycerin or with heart problems, hypotension, hypertension, recent stroke, or certain eye disorders. Viagra ™ a drug, sildenafil, that allows increased blood flow into the penis; used to treat erectile impotence in men Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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No references found | Sildenafil Citrate and Vardenafil work in a very similar way - they "block" the PDE-5 enzyme, which in turn leads to the increased production of a chemical called cGMP; the higher levels of the cGMP chemical help the soft muscles of the penile arteries to relax, which results in better blood flow to the penis. Sildenafil citrate, sold as Viagra, Revatio and various other trade names, is a drug used to treat erectile dysfunction. This ability of nitric oxide to enlarge blood vessels was an important step in the development by Pfizer Corporation of the drug sildenafil citrate, which is also known as Viagra. |
sildenafil citrate |
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