Vilitra 20 is one of those pills, which is used to treat male ED i.e. impotence. Vilitra 20mg is taken 1 hour before sex. The effect lasts for 5-6 hours after taking it. Vardenafil works primarily in the Vilitra 20. Take Vilitra 20 Mg only once a day. The function of these tablets is similar to other ED pills, but a little more expensive to make.