Levitra is used to treat the problem of erectile dysfunction or impotence, a condition that has affected millions of men worldwide, where a person cannot get a proper erection for sexual intercourse. Levitra is the marketed name. It contains the main ingredient known as Vardenafil( generic name). It falls under the category of Phosphodiesterase type 5(PDE-5) inhibitors. You can buy Levitra online from an authorized licensed online drug store or any nearby chemist shop.