Under certain conditions, L-Glutamine is an essential amino acid. Useful in maintaining the body's nitrogen balance, it is also thought to be a necessary constituent of the Glucose Tolerance Factor which aids in the regulation of insulin production. Glutamine has been thought by some to be a protective agent for the body against the ravages of alcohol, at times decreasing the desire for it, as well as sugar.Glutamine, an amino acid belonging to the population of brain nutri-chemicals called the three musketeers, participates in the production of DNA chromosomal activity and production. Glutamine is primarily an energy source, and a primary energy food for the brain, as well as a mediator of both glutamic acid and GABA activity.

