The drug Vilitra 40 (vardenafil 40 mg) is intended for men from 18 to 65 years of age to achieve an erection. Vilitra 40, commonly known as Vardenafil, works by enhancing erection.Vilitra 40 (vardenafil 40 mg) is available as an oral tablet and should be swallowed whole like a pill. It should not be chewed.