Viagra - Impotence Treatment Update

Sildenafil (Viagra) is approved for the treatment of impotence (also known as erectile dysfunction). It was the first oral medication for this purpose.

What are the causes of impotence? How does Viagra affect erection? Are there side effects and drug interactions? Read on...

Impotence is a consistent inability to sustain an erection sufficient for sexual intercourse. Impotence can be a total inability to achieve erection, an inconsistent ability to do so, or a tendency to sustain only brief erections. Incidence rises with age: about 5 percent of men at the age of 40 and between 15 and 25 percent of men at the age of 65 experience impotence. Yet, it is not an inevitable part of aging.