비아그라에 대한 편견 없는 견해

In the event the cGMP is wrecked via the phosphodiesterase-5 enzyme, the erection ends. Viagra stops phosphodiesterase-5 from destroying cGMP so cGMP stays about extended, which ends up in a more prolonged erection. This information and facts is for informational uses only and is not intended for being a substitute for professional clinical sugges