Gamma Amino Butyric Acid. Relaxation Formula. Gamma Amino Butyric (GABA) discovered in 1950 is a neurotransmitter found in the brain. It is made from the amino acid glutamate with the aid of Vitamin B-6. GABA is intended to provide nutritive support for relaxation. KAL® GABA is all natural with no lactose or artificial additives.