비아그라에 대한 확실한 가이드

At one oral doses of one hundred mg and 200 mg, transient dose-similar impairment of shade discrimination was detected using the Farnsworth-Munsell a hundred-hue examination, 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 while in the retina.�

read more