Levitra, it’s active substance Vardenafil, is used to combat the effects of erectile dysfunction. This includes producing and mantaining an erection. Blood flow to the penis is increased during sex. A chemical called PDE5 (phosphodiesterase type 5 ) causes an erection to decrease or fail completely, but Levitra reverses this process by blocking the chemical. This does not mean a man can obtain an erection without first becoming aroused, only that if taken roughly an hour before arousal occurs, the penis will remain erect longer. Continue reading Levitra – Vardenafil →