Yes, Taurine increases GABA. Taurine is a non-protein amino acid that is an inhibitory neuromodulator in the human brain. There was biological research on the neuromodulatory role of taurine in the brain. The study was about the effects of intraperitoneal injections of taurine on the concentrations of glutamate and GABA. As a result, glutamate increased and alanine decreased markedly in both brain structures.