The active ingredient in vilitra 40tablets is vardenafil. Men who use this drug should do it. Men who suffer from erectile dysfunction and impotence.Which helps men to get a hard erection in their sex life and make your sexual life happy. The effect of this drug lasts for 4-5 hours. Therefore, this medicine should be taken 30 minutes before sexual intercourse. It is important to consult your doctor while taking this medicine.