ViagraGeneric Name:sildenafil Revised:4/1/2000  | Table of Contents |
OverviewSide Effects and InteractionsTaking the MedicineSpecial Precautions | Overview |
Viagra changed the way the world viewed impotence, now referred to as "erectile dysfunction."
Although there were several medications to treat this condition before Viagra, none were available in an oral formulation.
Caverject (alprostadil) has to be injected into the penis, something that causes many men to cringe. Swallowing a pill is a lot more appealing for most men.
Viagra has no aphrodisiac properties. It will not improve libido or cause an erection.
What it can do is facilitate an erection when a man is stimulated sexually. It does this by blocking an enzyme which allows the buildup of a chemical that improves blood flow into the penis.
The positive effect may be seen anywhere from 30 minutes to four hours after swallowing Viagra.
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