A 비아그라의 간단한 열쇠 공개

If the cGMP is destroyed via the phosphodiesterase-five enzyme, the erection ends. Viagra stops phosphodiesterase-5 from destroying cGMP so cGMP stays all-around more time, which leads to a far more prolonged erection. The subsequent situations happened in < two% of patients in controlled clinical trials; a causal connection to Viagra is uncertain