Glutamine doesn't make your muscles grow. It prevents catabolism under stress.
Glutamine is a conditionally essential amino acid that the body needs more of when a person is under physical exertion, stress or is sick. L-Glutamine has been shown to help with gastro intestinal conditions and enhances the body’s natural immune response.
buying supplemented glutamine has little effect, hence the studies i posted and the multitude of others ive posted.
your body can make/get all the glutamine it requires through daily supplementation.
if you have some studies post them i would be interested in reading them as i know you know your shit.
it seems to be effective, for sleep via gabanergic agonism and immune(food may be adequete) and digestion(best option imo).