Vilitra 20 is primarily ED's best drug. Vardenafil acts as the active ingredient in the drug Vilitra. Vilitra 20 is to be taken sometime before intercourse. The action of the drug Vilitra 20 Mg is similar to that of sildenafil and tadalafil. The effect lasts for 4-5 hours after taking Vilitra 20mg drug. Vilitra 20 is the best drug for ED.