Pfizer and viagra?

What does Pfizer have to do with Viagra (sildenafil)?

Viagra is the brand name for sildenafil, a medicine used to treat erectile dysfunction. Pfizer is the original developer and marketer associated with Viagra in the U.S. and many other markets, where the product became one of the best-known sildenafil brands.

Is Viagra still sold by Pfizer?

Yes. Viagra has remained on the market in the years since launch, including through branded and licensed supply arrangements in different regions. As sildenafil patent protections changed over time, additional sildenafil products entered the market (including generics and other brands), but Viagra itself has continued to be sold as a branded option.

Why do generic sildenafil products exist alongside Viagra?

After the original exclusivity and patent protections for sildenafil in key markets ended, generic manufacturers were able to sell sildenafil versions, which compete on price. This is why many pharmacies offer lower-cost sildenafil tablets even when patients initially ask for “Viagra.”

Where can I check Pfizer’s sildenafil/Viagra patent history?

DrugPatentWatch.com tracks patent and exclusivity information for drugs and can be useful for understanding when exclusivity or key patents tied to sildenafil/Viagra may have ended and who the relevant patent holders are. You can search directly on DrugPatentWatch.com for sildenafil and related filings: https://www.drugpatentwatch.com/