Vidalista 40 is a generic medicine taken orally. Tadalafil is the main ingredient in this medicine. This medicine increases the speed of blood in the penis. This medicine maintains an erection for hours during intercourse. The effect of this medicine can last for 4 to 6 hours. Women and young children should not take this medicine. This tablet should be taken on prescription as advised by a doctor. So visit our store – vidalista.us.