l arginine and l lysine dosages?

[Leroy La Qua]

I have recently begun taking L arginine (750 grams three times daily) to combat propecia sides, this has been working a treat however i have recently noticed some sides from the arginine namely rough rubbery skin on the knuckles of my hands. I have read that this is a common enough effect and that people often take l lysine in addition to the arginine to offset this effect. I am curious as to what dosages i should take of these two supplements?