Kamis, 17 Februari 2011

How Viagra Works

Erectile Dysfunction: Overview

Viagra (Sildenfil citrate) regulates sexually man is a stimulus for prescription drugs that erection problems. In addition, for men, it is difficult to get an erection during sexual intercourse will keep necessary. These conditions are, or are referred to as erectile dysfunction ED.
Men may have erectile dysfunction to maintain the imbalance of certain chemicals in the blood lead to physical or exit the penis. During erection difficult and demanding sex, be able to ejaculate, the penis of a "trap" the blood. Expansion of the body, fill with blood, there are certain chemicals cause blood vessels in the penis to create an erection.
ED is a man, these chemicals are unbalanced, it can not function properly. People can not maintain an erection of the penis because it was not trapped in the blood. Without an erection, it is not sexy, in principle, ejeculate Do not.

How does Viagra work?

Viagra and other drugs, or how it works, the reason for blocking the action of a chemical excess blood from outside the body of the penis. By blocking these chemicals, because of his penis blood needed to complete the same sex, sometimes people do not achieve erection and ejaculation difficulty.
Physical substance, or a phosphodiesterase type 5 PDE5 Viagra is known inhibitors. By disabling the other body chemicals cause blood, PDE5 in the penis causing an erection to be taken inhibitors work. This is his dick in return for non-irritating weak state, a result, after a man Comes, which is usually free. Erectile dysfunction in men, PDE5 is freed from the effects of chemical inhibitors cause an erection too soon.
As long as he is, it exists, as erection and ejaculation, Viagra remains the only human blood to inhibit the action of PDE5. Notes 3. Overall, Viagra works very quickly that most men take. You can feel the effect of Viagra is usually within 30 minutes after ingestion.

Viagra is effective in the first two hours after ingestion of most of its effects last up to four hours. About four hours later, the drug has lost its effectiveness.