Gamma-Aminobutyric acid (GABA) is a crucial neurotransmitter that regulates human cognition, emotions, and sleep. If glutamate, which induces excitation in the brain, acts as the "accelerator pedal," GABA serves as the "brake pedal" as the primary inhibitory neurotransmitter responsible for sedation and relaxation in the brain and spinal cord . We will provide a detailed overview of GABA production in the body, symptoms of deficiency, and methods for managing it.