Vardenafil acts as the active ingredient in Vilitra 40 drugs. Vilitra 40 Mg is taken 1 hour before intercourse. After taking it, its effect lasts for 4-5 hours. Vilitra 40 Mg is ED's best pills. It is important to consult a doctor before taking Vilitra 40. Vilitra 40 Mg is widely used for ED. Vilitra 40 is a drug used by men so women should not use this drug.