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2. Sildenafil - Wikipedia

   en.wikipedia.org/wiki/Sildenafil

   Viagra is one of the world's most counterfeited medicines. [66] [67] According to a 2012 Pfizer study, around 80% of sites claiming to sell Viagra were selling counterfeits. [65] An October 2023 release stated that erectile dysfunction medicines were the most seized drugs by the Interpol [68] accounting for 22% of seizures. [69]

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

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

   The U.S. Food and Drug Administration (FDA) has approved several medications for the treatment of ED, including: Sildenafil (the active ingredient in Viagra or generic versions of Viagra ...

4. Is Sildenafil Safe for This Common Male Problem? - AOL

   www.aol.com/sildenafil-safe-common-male-problem...

   After further trials, sildenafil citrate was approved by the Food and Drug Administration (FDA) in 1998 as the active ingredient in brand name Viagra, now a very well-known drug for ED.

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

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

   If you struggle with ED, drugs like Viagra®, sildenafil, tadalafil, and other FDA-approved medications could help with your performance. But if you’re not prescribed one of these meds, taking ...

6. 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.

7. Cialis vs. Viagra: How Are They Different? - AOL

   www.aol.com/cialis-vs-viagra-different-175700354...

   Viagra was approved by the FDA as a treatment for ED in 1998. It’s now sold as brand name Viagra and as generic sildenafil. It takes around 30 to 60 minutes for a normal dose of Viagra to begin ...

8. How to Take Viagra for Best Results - AOL

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

   Like other prescription medicines, Viagra and its generic form, sildenafil, work best when you take them under the right conditions. From your mental state to your eating habits, a range of ...

9. 4 Common ED Pills: Weighing the Pros & Cons of Each - AOL

   www.aol.com/4-common-ed-pills-weighing-141800609...

   Tadalafil is the active ingredient in Cialis, which was approved by the FDA as an ED medication in 2003. These days, it’s available in its generic form and as a brand name for use as needed or ...