How does Viagra work?

Oksana Logunova
Oksana Logunova
March 22, 2013
How does Viagra work?

Fifteen years ago, the German company tested the drug, applicable in the treatment of cardiovascular diseases. The study revealed a strange side effect of the drug - in the presence of sexual arousal, there was a very strong erection. So was developed Viagra.

The mechanism of action of the drug

To understand how Viagra works, you need to consider the mechanism of erection. Under the action of sexual arousal in the small pelvis is the expansion of blood vessels. At the same time, a large volume of blood rushes to the penis, as a result of which it increases in size, it becomes harder - an erection occurs. After ejaculation decreases sexual tension, the blood goes away and the erection goes away. The action of some drugs, as well as many chronic diseases, impair vascular blood flow and stimulation no longer causes the necessary blood flow to the penis - an erection does not occur or becomes insufficient for sexual intercourse.With frequent recurrence of this situation, doctors diagnose erectile dysfunction.

The effectiveness of Viagra lies in the expansion of blood vessels exclusively in the penis during sexual arousal, thus it helps the emergence and maintenance of erection. The popularity of the drug is due not only to the fact that it increases the potency, but also to how Viagra affects the quality of intercourse - increasing its duration, reducing the time to prepare for the next, allowing you to more clearly perceive an orgasm.