Vardenafil Citrate is the active agent present in Vilitra 40 mg which is mainly used for the treatment of erectile dysfunction. But it is also used to treat some other health problems like pulmonary hypertension. This vardenafil ingredient helps to relax the tissues of the penis in men. This medicine helps only men aged 18 to 65 years. You can take this medicine before or after food. The effect of this medicine lasts for 4 to 6 hours.