As the arteries in the Penis expand and harden, the veins that normally carry blood away from the area become compressed, restricting the blood flow out of the shaft. The anti-impotence drug Viagra, produced by the U.S. pharmaceutical giant Pfizer, first became available in 1998 and since then has helped more than 16 million men around the world, who suffer from varying degrees of Erectile Dysfunction (ED) or impotence, to enjoy a healthy and satisfying sex life. Not until the latter half of the 20th century have men shown such a huge interest in maintaining their youthful vigour through diet, exercise, skin care and even plastic surgery. Worldwide the figure could be hundreds of millions. Studies in the United States show that roughly half of all men between the ages of 40 and 70 experiences ED to a greater or lesser degree. NO in turn activates an enzyme called Guanylate Cyclase that itself triggers levels of Guanosine Monophosphate to increase. Let's take a look at what Viagra is and what it does and hear from some people who have already used this little pill that has literally revolutionised their sex life. We are going to take
Erectile Dysfunction (ED) / Impotence information by the doctors of MedicineNet.com
Read about erectile dysfunction (ED) / impotence includes what it is, how ED is diagnosed, and treatment options.Does Testosterone Aid . Prone to Impotence
Erectile Dysfunction
Fact sheet on impotence from the National Institutes of Health Kidney and Urologic Diseases Clearinghouse.
Impotence
Impotence is a consistent inability to sustain an erection for sexual intercourse. These variations make defining impotence and estimating its incidence
