Pfizer, which is a huge pharmaceutical company, manufactures Viagra. Many people generally believe Viagra is a breakthrough treatment for erectile dysfunction (ED) among men. They feel that it is a magic pill that can improve their sex lives. Contrary to the belief of some people, Viagra is not a magic pill or an aphrodisiac. It is an anti-impotence drug.

Impotence or erectile dysfunction is a sexual disorder among men that results in loss of erection. Its causes include chronic diseases such as hypertension and diabetes, intake of some prescription drugs or any other serious illness. If erectile dysfunction is due to psychological factors, then men can take psychological counselling. However, when erectile dysfunction occurs due to physical factors, then intake of Viagra becomes necessary.