Levitra is a medication used for treating erectile dysfunction or impotence issues in men. It is considered to be safe and has minimal side effects. Impotence is the inability of a man to attain or maintain an erection. People prefer to buy Levitra for impotence issues. This occurs naturally when the penis becomes engorged with blood as the blood vessel size increases to bring more blood and the vessels that carry blood away decrease. Levitra helps increase blood flow into the penis area and relaxes the muscles to maintain an erection. This is done by preventing the PDE5 enzyme from breaking down a chemical messenger known as cyclic GMP, which is needed to dilate the blood vessels in the penis. The active ingredient of Levitra is Vardenafil to help to cure ED.