The link between diabetes and erectile dysfunction Is well known. The mechanism in which high blood sugar can adversely affect erection quality is complex, and diabetes is known to impair blood vessels all over the body (heart, kidneys, eyes). The blood vessels in our penis unfortunately are no exception. If you are currently diabetic the best treatment for controlling your blood sugar would be to consume an appropriate diet (as well as any diabetes medication your doctor has prescribed). Exercise is also known to be of great benefit as well. For diabetics and non-diabetics who suffer from ED, Cialis (tadalafil) or Viagra (sildenafil) are both commonly used drugs to aid in erection strength. You simply take one tablet one hour prior to sex! While ED medication will help treat symptoms of ED, it is important to not lose sight of managing your diabetes. If you would like to order a prescription through VidaRx our doctors would love to help you!