비아그라에 대해 알려지지 않은 사실
At single oral doses of one hundred mg and two hundred mg, transient dose-linked impairment of colour discrimination was detected using the Farnsworth-Munsell a hundred-hue examination, with peak effects close to the time of peak plasma amounts. This discovering is in step with the inhibition of PDE6, that is linked to phototransduction inside the