GABA (gamma-aminobutyric acid) is a nonproteinogenic amino acid that functions as a neurotransmitter in the human brain. GABA is synthesized by the body itself and its presence in the central nervous system can promote relaxation and reduce nervous tension. Not made with wheat, gluten, soy, milk, egg, fish, shellfish or walnut ingredients. Produced in a GMP plant that processes other ingredients that contain these allergens