What is Viagra?

Viagra is a prescription medicine taken by mouth for the treatment of erectile dysfunction (ED) in men. ED is a condition where the penis does not harden and expand when a man is sexually excited, or when he cannot keep an erection. Viagra may help a man with ED get and keep an erection when he is sexually excited. Viagra must be used only under a doctor's care.

Viagra does not:

• cure ED
• increase a man's sexual desire
• protect a man or his partner from sexually transmitted diseases, including HIV. Speak to your healthcare professional about ways to guard against sexually transmitted diseases.
• serve as a male form of birth control

Viagra is only for men with ED. Viagra is not for women or children. Viagra must be used only under a healthcare professional's care.

Who Should Not Take Viagra?

Do not take Viagra if you:

• take any medicines called "nitrates"
• use recreational drugs called "poppers" like amyl nitrate and butyl nitrate
• have been told by your healthcare professional to not have sexual activity because of health problems

What are The Risks?

The following are the major possible risks and side effects of Viagra therapy. This list is not complete.

Viagra can cause your blood pressure to drop suddenly to an unsafe level if it is taken with certain other medicines such as nitrates and alpha-blockers, and recreational drugs that contain nitrates called "poppers". A sudden drop in your blood pressure could cause you to become dizzy, faint, or have a heart attack or stroke.

Tell all your healthcare professionals that you take Viagra. If you need emergency medical care for a heart problem, it will be important for your healthcare professionals to know when you last took Viagra.