비아그라에 대해 알아야 할 고려 사항

If the cGMP is ruined via the phosphodiesterase-five enzyme, the erection ends. Viagra helps prevent phosphodiesterase-5 from destroying cGMP so cGMP stays around longer, which results in a more extended erection. Medical professionals typically will not likely prescribe Viagra with nitrates. They are prescription drugs used to treat or support re