The active ingredient named vardenafil is found in the vilitra tablet. Used to treat men suffering from erectile dysfunction. The effect of this medicine lasts for 4 to 6 hours. If the effect of this medicine lasts for more than 4 hours, consult a doctor immediately. If you take vilitra 20 one hour before sexual intercourse, you can see the good effect of this medicine. Consult a doctor before using this medicine.