비아그라의 5가지 필수 요소

비아그라의 5가지 필수 요소

Sexual stimulation that results in an erection brings about the production and release of nitric oxide within the penis. Nitric oxide triggers an enzyme, guanylate cyclase, to create cyclic guanosine monophosphate (cGMP) that is certainly largely chargeable for growing and reducing the dimensions of blood vessels carrying blood to and through the p

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