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2. 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]

3. Your ED Pill Guide: Everything You Need to Know Before ... - AOL

   www.aol.com/ed-pill-guide-everything-know...

   Viagra (or sildenafil) lasts three to five hours after it’s consumed. Cialis (tadalafil) has a half-life of 17.5 hours, meaning this drug lasts up to 36 hours after it’s consumed.

4. Viagra: What It Treats & Its Side Effects ( Plus What It Was ...

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

   Below, we’ll explain the origin story of Viagra, what this boner-benefitting pill can do, the benefits of Viagra for men, and the potential side effects of taking it. samael334/istockphoto What ...

5. Does Viagra Help Me Last Longer in Bed? - AOL

   www.aol.com/does-viagra-help-last-longer...

   Because brand name Viagra, also known as sildenafil citrate, is thought of as a “cure-all” for intimate ailments (but mostly for ED), many men turn to it as a solution to the oldest problem ...

6. What Happens If You Take Viagra and You Don't Need It? - AOL

   www.aol.com/happens-viagra-dont-105800158.html

   There’s not much research about the long-term dangers of taking ED meds recreationally, but there's more than enough information available about the general risk factors of taking this ...

7. Discovery and development of phosphodiesterase 5 inhibitors

   en.wikipedia.org/wiki/Discovery_and_development...

   Figure 3. A flow chart showing the relationship between different parts (domains) of PDE5-inhibitors. Figure 4. A representation of the 3D structure of sildenafil, a common PDE5-inhibitor. The PDE5 inhibitors sildenafil, vardenafil and tadalafil are competitive and reversible inhibitors of cGMP hydrolysis by the catalytic side of PDE5.

8. Viagra - Wikipedia

   en.wikipedia.org/?title=Viagra&redirect=no

   From or to a drug trade name: This is a redirect from (or to) the trade name of a drug to (or from) the international nonproprietary name (INN).

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

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

   What Does Viagra Do? Viagra works by improving blood flow to your privates. The active ingredient, Sildenafil, is a PDE5 inhibitor that helps blood vessels relax.