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  2. How to Take Viagra for Best Results - AOL

    www.aol.com/viagra-best-results-105700318.html

    How to Use Viagra for Best Results. Viagra is great as an ED treatment, but taking it in particular conditions can make it even more effective. To get the best results from Viagra when treating ...

  3. Viagra: What It Treats & Its Side Effects ( Plus What ... - AOL

    www.aol.com/lifestyle/viagra-treats-side-effects...

    Most men and women know at least vaguely what Viagra does, but not everyone knows how it does it. ... Since 1998, the Pfizer-created drug sildenafil citrate has been a reliable treatment for the ...

  4. Sildenafil - Wikipedia

    en.wikipedia.org/wiki/Sildenafil

    Sildenafil, sold under the brand name Viagra, among others, is a medication used to treat erectile dysfunction and pulmonary arterial hypertension. [4][8] It is also sometimes used off-label for the treatment of certain symptoms in secondary Raynaud's phenomenon. [9]

  5. What Does Viagra Actually Do to Your "Intimate" Experience? - AOL

    www.aol.com/does-viagra-actually-intimate...

    For example, a small study of 20 people that looked into Viagra’s effect on refractory time found that a standard 100mg dose of sildenafil citrate reduced the average male post-intimacy recovery ...

  6. Sexual medicine - Wikipedia

    en.wikipedia.org/wiki/Sexual_medicine

    On March 27, 1998, sildenafil citrate was approved by the Food and Drug Administration (FDA) for the treatment of ED. The approval of Sildenafil transformed the way America talked about a topic that was once very private before. [2]

  7. PDE5 inhibitor - Wikipedia

    en.wikipedia.org/wiki/PDE5_inhibitor

    Chemical structure of sildenafil (Viagra), the prototypical PDE5 inhibitor. A phosphodiesterase type 5 inhibitor (PDE5 inhibitor) is a vasodilating drug that works by blocking the degradative action of cGMP-specific phosphodiesterase type 5 (PDE5) on cyclic GMP in the smooth muscle cells lining the blood vessels supplying various tissues.

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