Vardenafil (generic Levitra) is prescribed to treat ED caused by psychological, circulation, and neurological factors. Depending on the cause of ED, it may be prescribed with other treatments—for example, psychotherapy for ED caused by mental health concerns or relationship issues. Miller said, “Levitra treats the symptoms of ED, not the underlying cause. Although Levitra is not effective for all men, it is an option for all types of ED. For severe cases—especially for men with severe damage to the erectile nerves—other treatment options are available.”