GABA is available in tablets,capsules and in powdered form,and has been applied to all kind of healthy products ,medicine. What is Gamma amino butyric acid (GABA) 1. Catalytically converted from glutamic acid through glutamate decarboxylase, GABA, a kind of natural non-protein amino acid, is an important neurotransmitter of the central nervous system for mammals.2. GABA can be found in our eye ...