Vidalista 40 drug is for men who are unable to get an erection with their partner for a long time.This drug is best used to treat erectile dysfunction and impotence. Vidalista 40 contains the active ingredient Tadalafil. It helps men to get strong and long lasting erection in sex life. It is important that you consult your doctor while taking this medicine. The effect of Vidalista 40  is observed for 24 hours.