Medically reviewed by Lindsay Cook, PharmD Viagra (sildenafil) is an oral drug used to treat erectile dysfunction (ED) that ...

Both are effective treatment options for ED and there are no differences between Viagra and sildenafil in terms of active ingredients. They both work in the ... themselves are not FDA-approved ...

but not everyone knows how it does it. So, what is Viagra, exactly, and how does it work? Below, we’ll explain the origin story of Viagra, what this boner-benefitting pill can do, the benefits ...