비아그라에 대한 편견 없는 견해

PDE3 is associated accountable for cardiac contractility. Sildenafil is barely about 10-fold as powerful for PDE5 in comparison to PDE6, an enzyme located in the retina that's involved with the phototransduction pathway in the retina. This lessen selectivity is thought to be The idea for abnormalities connected to color vision [see Pharmacodynamics