비아그라에 대한 편견 없는 견해

PDE3 is involved answerable for cardiac contractility. Sildenafil is simply about ten-fold as strong for PDE5 when compared with PDE6, an enzyme located in the retina and that is involved with the phototransduction pathway from the retina. This lower selectivity is thought to be The idea for abnormalities connected to color vision [see Pharmacodyna