GNC GABA - 750 mg GABA gamma-aminobutyric acid is an amino acid. Each serving supplies 750 mg of gamma-aminobutyric acid (GABA). Activates receptors critical for brain function. 90 capsules 90 servings Gluten free These statements have not been evaluated by the Food & Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.