They include dutasteride Avodart, Jalyn and finasteride Propecia, Proscar. Often, these are prescribed for chest pain called angina. These include itraconazole Sporanox, Tolsura , ketoconazole Extina, Ketozole, others and ritonavir Norvir. Do not take the rapidly disintegrating tablet with water or other liquids. This boosts blood flow and helps you get an erection from sexual activity. Tadalafil Cialis.Vardenafil. These medicines are called PDE5 inhibitors. They enhance the effects of a chemical the body makes that relaxes muscles in the penis, called . Vardenafil is a medication that treats erectile dysfunction. ED is the inability to achieve and sustain an erection suitable for sexual intercourse. This medication works by increasing .  · For treatment of erectile dysfunction: For oral dosage form (disintegrating tablets): Adults—10 milligrams (mg) as a single dose, no more than once per day, .