How Does Viagra Work?

As you have probably heard, Viagra (sildenafil) is used to treat erectile dysfunction (more commonly called "impotence") in men who either can't have or can't maintain erections. Viagra has been on the market since March 1998 and it's one of the most commercially successful drugs ever launched, with millions of users around the world.

Just as important as it is to find out how Viagra works and what it can do for you is to find out what Viagra can't do. It isn't an aphrodisiac, so it can't get you aroused when you're not sexually interested. If you're healthy, Viagra won't give you a faster or harder erection or help you last longer. In fact, in healthy men it can even cause a painful, long-lasting erection.

Exactly How Does Viagra Work?

Normally, this is what happens when a man is aroused: A chemical called cyclic GMP triggers a chain of reactions that ends up relaxing the penis muscles and letting extra blood to flow in (rigid muscles do not cause the hardness of an erection, but the extra blood does).

Viagra boosts the levels of cyclic GMP in the penis. It does all this by preventing an enzyme (a protein involved in a biochemical reaction) called phosphodiesterase

type 5, or PDE5, from breaking down cyclic GMP as fast as it usually does. The result: Cyclic GMP stays around longer, the muscles relax, and more blood flows in and stays in.

How Do I Get Viagra?

The easiest and cheapest way to purchase Viagra is to buy the generic version of it. There are many trustworthy online pharmacies that sell generic Viagra, which is basically the same drug as the brand version. Only major difference is that it is considerably cheaper.

By David Talbot January 16, 2009

Back To Viagra Cialis Levitra Information Home >>

Is It Safe to Buy Generic Viagra Online >>