Vilitra 10 mg is a PDE5 inhibitor. It works by selectively inhibiting the PDE5 enzyme, responsible for the breakdown of cyclic guanosine monophosphate, in the smooth muscles of the penis. During sexual stimulation, nitrogen dioxide is released in the penis. This leads to the formation of cGMP. The smooth muscle of the vessels of the penis is relaxed by the action of cyclic GMP, allowi... https://royalpharmacart.com/product/vilitra-10-mg/