Vidalista Black 80 is a (phosphodiesterase) PDE 5 inhibitor which is a vasodilating drug and it acts by blocking the degrading action of cGMP. The movement of all body parts is governed by our brain. The communication between the brain and the body parts is facilitated by cGMP which gets degraded in the body due to various factors. Vidalista 80 mg reduces the degrading effect of cGMP and allows signals from the brain to the penile area. It further relaxes muscles in the penile area. This leads to an increase in blood supply which has a direct connection to an erection.