비아그라에 관한 모든 것

PDE3 is concerned in charge of cardiac contractility. Sildenafil is barely about 10-fold as powerful for PDE5 in comparison to PDE6, an enzyme found in the retina and that is involved in the phototransduction pathway in the retina. This decreased selectivity is considered The premise for abnormalities linked to shade eyesight [see Pharmacodynamics]