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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. 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 ...

5. 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 ...

6. Erectile dysfunction - Wikipedia

   en.wikipedia.org/wiki/Erectile_dysfunction

   The current most common treatment for ED, the oral PDE5 inhibitor known as sildenafil (Viagra) was approved for use for Pfizer by the FDA in 1998, which at the time of release was the fastest selling drug in history.

7. Discovery and development of phosphodiesterase 5 inhibitors

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

   Sildenafil is a prototype of PDE5 inhibitors that Pfizer launched as Viagra. It was approved by the Food and Drug Administration (FDA) in 1998 as the first oral medicine for erectile dysfunction. Later, in the year 2005, it was approved for the treatment of pulmonary arterial hypertension. [2] Vardenafil and tadalafil were discovered in 1990.