Medicine info: Brand names
Medicine info: Active ingredients
Viagra is a medicine used to treat erectile dysfunction (ED) in men. This article explains how it works, how to take it, possible side effects, myths and how to safely buy Viagra.
Erectile dysfunction, or impotence, means not being able to get or keep an erection that is sufficient for sexual intercourse. Many men have impotence at some time in their lives. It can come and go.