비아그라에 관한 모든 것

Once the cGMP is destroyed via the phosphodiesterase-5 enzyme, the erection finishes. Viagra helps prevent phosphodiesterase-5 from destroying cGMP so cGMP stays around for a longer period, which results in a more extended erection. VIAGRA can cause your blood pressure to drop quickly to an unsafe amount if taken with sure other medicines. Tend no