비아그라에 대한 편견 없는 견해

When the cGMP is destroyed from the phosphodiesterase-five enzyme, the erection finishes. Viagra prevents phosphodiesterase-five from destroying cGMP so cGMP stays all-around more time, which leads to a far more prolonged erection. The necessarily mean profiles on the change from baseline in standing systolic hypertension in subjects taken care of