비아그라에 대한 소문
At single oral doses of a hundred mg and 200 mg, transient dose-associated impairment of coloration discrimination was detected using the Farnsworth-Munsell 100-hue take a look at, with peak results close to the time of peak plasma stages. This discovering is according to the inhibition of PDE6, that's involved in phototransduction from the retina.