다른 사람들을 돕기 비아그라의 장점을 깨닫다

Once the cGMP is destroyed via the phosphodiesterase-five enzyme, the erection ends. Viagra stops phosphodiesterase-5 from destroying cGMP so cGMP stays around for a longer period, which results in a more prolonged erection. In case you have had an allergic reaction to Viagra or any of its elements, your doctor will probably not prescribe Viagra.