GABA is an amino acid classified as a neurotransmitter. Studies have shown GABA to play a key role in the secretion of Growth Hormone. The principle anabolic actions of Growth Hormone including the stimulation of amino acid transport, simulation of protein synthesis reduction of body-fat and the proliferation of cell growth. AST Sports Science selectively imports GABA under rigid quality control conditions. Each batch is HPLC Certified and Laboratory Tested for purity and potency. GABA is a naturally occurring amino acid classified as a neurotransmitter. Some individuals may experience a minor tingling of skin and/ or slight shortness of breath shortly after taking GABA. This is characteristic of this amino acid and quickly subsides.