비아그라를 위한 5초 비법

PDE3 is included in charge of cardiac contractility. Sildenafil is simply about 10-fold as powerful for PDE5 compared to PDE6, an enzyme present in the retina which happens to be associated with the phototransduction pathway with the retina. This lower selectivity is thought to be The idea for abnormalities connected to color vision [see Pharmacody