Viagra

About erectile dysfunction (ED)

• What is ED?
• What causes ED?

 

   Do you sometimes have trouble getting or keeping an erection? You may have erection difficulties, such as erectile dysfunction. This is also known as impotence. And it happens to a lot of men. In fact, most men will have a problem getting an erection at some time in their lives. But for others it happens more often. Studies show that about half of all men in the United States between the ages of 40 and 70 have ED to some degree.