다른 사람들이 비아그라의 장점을 깨닫게 돕습니다

Sexual stimulation that leads to an erection leads to the manufacturing and launch of nitric oxide during the penis. Nitric oxide results in an enzyme, guanylate cyclase, to produce cyclic guanosine monophosphate (cGMP) that is certainly largely to blame for growing and lowering the dimensions of blood vessels carrying blood to and within the penis