While men suffering from erectile dysfunction and impotence, the Doctor advises them to take vilitra 20 mg tablets. Which contains vardenafil as the active ingredient. Which increases blood flow in the range and helps men to have a longer erection in their sex life. This medicine is a very famous medicine in the world. It should be taken 30 minutes before sexual intercourse. The effect of this drug lasts for 4-5 hours. Therefore, it is important to consult your doctor while taking this medicine.