비아그라가 시간, 스트레스 및 돈을 절약할 수 있는 방법
Once the cGMP is wrecked from the phosphodiesterase-five enzyme, the erection ends. Viagra prevents phosphodiesterase-five from destroying cGMP so cGMP stays around lengthier, which leads to a more extended erection. The utmost dose of Viagra is one hundred mg each day. Doses earlier mentioned the utmost dose, for example 200 mg on a daily basis,