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With the introduction of effective pharmacologic therapies for erectile dysfunction, more men are seeking treatment. The underlying cause of erectile dysfunction is usually a chronic medical illness or a side effect of certain drugs. Less commonly, the problem is psychogenic. Even after optimal treatment of common medical disorders such as diabetes mellitus and hypertension, erectile dysfunction may persist. Pharmacologic treatments, such as the intracavernosal or transurethral administration of alprostadil or the use of the new oral medication sildenafil, may offer patients substantial benefit. Before any of these drugs are prescribed, consideration should be given to existing medical illnesses and medications, partner satisfaction, comfort with the method of administration and the side effect profile. (Am Fam Physician 1999;60:1159-72.) Dependable erections are not necessarily a sure sign of excellent health, but a penis that won't rise to the occasion is a warning that something may be awry. looking for cheap viagra online? canadian pharmacy viagra Vascular reconstructive surgery Restores natural erections when successful buy Viagra 25mg here brand viagra without prescription online where to buy viagra safely viagra no prescription This is another test of nerve function in the shaft of the penis. This test uses electromagnetic vibration to evaluate sensitivity. A decreased perception of vibration may indicate nerve damage in the pelvic area, which can lead to impotence.