Because L-Glutamine is one of the few preferred sources of energy by the brain, L-Glutamine also is reported to help boost mental energy and support normal cravings for food or alcohol.
Clinical studies in recent years have changed the long-held view that glutamine is a non-essential amino acid. This reassessment has occurred in stages. Since the 1980's L-Glutamine has been classified as a conditionally-essential amino acid, meaning that your body usually can make (synthesize) enough. However, clinicians have widely disputed this view, claiming that ?enough? frequently is not enough.