GABA is an amino acid known for its importance Supports relaxation and a sense of calm, May assist in promoting better sleep, GABA has been shown to support Growth Hormone synthesis nervous system functioning. GABA is an amino acid known for its importance in nervous system functioning. It is an inhibitory neurotransmitter, naturally produced in the brain, that counters excess brain stimulation. This formulation provides Free Form GABA to promote optimal absorption and assimilation.