viagra at canadian pharmacy viagra without prescription Sleep disturbances The majority of legal claims arising in the treatment of men with erectile dysfunction (ED) stem from complications associated with penile implants. The patient and partner must be carefully counseled on the potential problems and the possibility of another surgery to correct a malfunctioning system, to treat an infection, or to treat an erosion of the prosthesis. These are sophisticated devices that ordinarily function very well for many years, but problems can occur. There are no formal tests to diagnose erectile dysfunction. Some blood tests are generally done to exclude underlying disease, such as diabetes, hypogonadism and prolactinoma. Impotence is also related to generally poor physical health, poor dietary habits, obesity, and most specifically cardiovascular disease such as coronary artery disease and peripheral vascular disease. Advances in suppositories, injectable medications, implants, and vacuum devices have expanded the options for men seeking treatment for ED. These advances have also helped increase the number of men seeking treatment. Gene therapy for ED is now being tested in several centers and may offer a long-lasting therapeutic approach for ED. WebMD Medical Reference provided in collaboration with the Cleveland Clinic