I don't take piracetam, but I have taken 1000-1500mg of l-glutamine along with daily inositol for anxiety. As far as I understand, the mechanism for anxiety is some kind of GABA dysfunction, and after three or four months of my regimen that seemed to get normalized and I didn't need it anymore. Earlier on I also tried inositol and GABA for this purpose, but found the glutamine to be less "heavy" on the body, without the GABA "pin-prickles" that it can sometimes induce. Based on the studies earlier in this thread and my experiences, I think l-glutamine does raise levels of GABA in the brain-but that doesn't necessarily correlate to an alcohol/benzo/GHB-like feeling. If you have a normal amount of GABA, as I feel I do at the moment, it doesn't really seem like it does much besides induce mild sleepiness and tingles. Now I can take 750-1500mg of l-glut without much mental effect, besides maybe the mental satisfaction of knowing I'm fueling my intestines and muscles.
Than again, diet has to be taken into account, if your diet is normally starved in l-glutamine you might feel the effects of supplementation moreso than if it isn't. I'm gluten intolerant and thus was probably starved of most amino acids and proteins before I started on a strict no-gluten, low-dairy diet. I'm not sure how the body regulates glutamine uptake from the gut, other than that the intestines absorb a fair amount. If anyone has any ideas, studies, or other experiences in this regard it would be helpful.
L-theanine and valerian-related things will help, I just got some valerian root and will be taking it before bed-time to see if it works better than an equivalent amount of l-glutamine for this purpose. Based on my memories it does, but than again GABA-ergics aren't really good in that department, hehe
Edited by Ketaminous, 24 March 2011 - 03:40 AM.