It is better to see your doctor if you think your medications are causing ED symptoms as soon as possible. Better lower your hypertension by being careful about the foods you eat, exercising regularly or changing your blood pressure medications. Some of the medications that treat hypertension are commonly linked to cause erectile dysfunction. Some medications may improve impotence and should be considered. Diuretics and beta-blocker medications are also believed to cause impotence in men. These are common medications regularly prescribed by doctors. It is possible for your GP to prescribe a combination of blood pressure medication to reduce the risk of erectile dysfunction so that a man can be able to produce a more sustained erection.