비아그라에 대해 알려지지 않은 사실
At solitary oral doses of 100 mg and two hundred mg, transient dose-associated impairment of coloration discrimination was detected using the Farnsworth-Munsell 100-hue take a look at, with peak effects close to the time of peak plasma amounts. This getting is per the inhibition of PDE6, that is involved with phototransduction within the retina.“