L-Glutamine, a non-essential amino acid, is one of two primary energy providers that burn glycogen to provide fuel for the brain. A protein building block, L-Glutamine supplies the brain with energy and nourishment for healthy brain function. L-Glutamine enhances mental alertness, learning processes and is also required by the brain as a neurotransmitter. L-Glutamine is necessary for burning glycogen, a principle fuel for the brain and also for stimulating a variety of neuro-functions. Considered beneficial for reducing sugar and alcohol cravings, L-Glutamine also reduces pain and alleviates fatigue caused by poor metabolism. L-Glutamine is naturally produced by the liver and kidneys, however, additional supplementation may be beneficial in the treatment of alcoholism, reducing cravings and mental degeneration. In addition, L-Glutamine may be used to help treat colitis, dizziness, ulcers, motion sickness, hypertension, ear infection and sore throat.