Vidalista 40 is effective in treating sexual dysfunction in men. The main ingredient in this medicine is tadalafil. This medicine increases the speed of blood in the penis. This medicine prolongs erection during intercourse. The effect of this medicine can last for about 4 to 6 hours. This medicine improves your sexual life. This medicine should be taken on prescription as advised by a doctor. So visit our store – vidalista.us.