GABA acts as an inhibitory neurotransmitter in the central nervous system. It acts in different ways responsibly either in the growing brain or mature brain. GABA acts to reduce anxiety responsibly. During anxiety, the central brain and fear circuits get hyperactive. Then GABA neurons get out and flow into the receptors sites. When GABA neuron binds with the receptors, it actually inhibits the central brain and slows down the hyperactivity.