다른 사람들이 비아그라의 장점을 깨닫게 돕습니다

Sexual stimulation that contributes to an erection causes the generation and release of nitric oxide from the penis. Nitric oxide triggers an enzyme, guanylate cyclase, to create cyclic guanosine monophosphate (cGMP) that is definitely generally answerable for escalating and lowering the scale of blood vessels carrying blood to and in the penis and