Gaba orally has very crappy bioavailability. Much of it gets broken down before it ever has a benficial effect on GH release. and arginine is possibly the worst NO boosting sup out there.

I would be hesitant to go with what some "monster" tells you, for a few reasons. one he is either geneticly predisposed to easily gain muscle, so what works for him isnt what works for a hardgainer. Two if he is that abnormally large, there is a chance he has used or is using AAS. So again what works on AAS isnt what works when your going the natty route. Three he works at a vitamin store, he wants to sell you shit, period.

I'm not saying it wont work for you, some people swear by GABA, but i wouldnt exspect miracles.

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