50 capsules 500 mg Free-Form Glutamine Solaray Glutamine increases the amount of GABA in the system. In doing so it aids in sustaining proper brain function and mental activity. Therefore Glutamine is known as brain food. Glutamine also promotes healthy maintenance of the digestive tract, aids in maintaining the proper acid/alkaline balance in the body, enhances antioxidant protection, decreases sugar cravings and the desire for alcohol. Glutamine is found in high quantities in the muscles, it helps to build and maintain healthy muscle.