Avoid Counterfeit VIAGRA (sildenafil citrate)
Avoid Counterfeit VIAGRA (sildenafil citrate) In 2024, Pfizer, the maker of both Revatio and Viagra, sued Teva for patent infringement, or trying to introduce a generic version several years before Pfizer’s patent for Viagra was set to expire. Sildenafil (Viagra) is used to treat erectile dysfunction (impotence; inability to get or keep an erection) in…