비아그라에 대해 알려지지 않은 사실
At single oral doses of a hundred mg and 200 mg, transient dose-related impairment of coloration discrimination was detected utilizing the Farnsworth-Munsell one hundred-hue check, with peak effects close to the time of peak plasma stages. This locating is in line with the inhibition of PDE6, that's involved in phototransduction within the retina.