Impotence is a sex problem. Men cannot maintain an erection due to this problem. Vilitra 20 should be used to cure this problem. By taking this medicine men can maintain sexual erection with their partner. This medicine contains vardenafil as an active ingredient. Vilitra 20 medicine is taken in different doses. The effect of this medicine is observed for 4 to 5 hours. It is important to consult a doctor before taking this medicine.