Vilitra 20 Mg is a phosphodiesterase type 5 (PDE-5) inhibitor, a class of medications designed to enhance blood flow to certain parts of the body, including the penis. Like other ED medications such as Viagra (Sildenafil) and Cialis (Tadalafil), Vilitra works by inhibiting the PDE-5 enzyme, which is responsible for regulating blood flow in the penis. By blocking this enzyme, Vilitra helps relax the blood vessels, allowing increased blood flow into the penis during sexual stimulation, resulting in an erection.