L-Glutamine, a free-form amino acid, can be converted to glutamic acid. Glutamic acid is a precursor to the important inhibitory neurotransmitter GABA (gamma-aminobutyric acid). L-Glutamine also plays an important role in ammonia disposal.* Free Form Suggested Use: 1 capsule daily. Allergies: Contains no yeast, dairy, egg, gluten, soy or wheat. Contains no preservatives, or artificial color, flavor or fragrance.