Relax with GABA! If you’re stressed out by the pressures of a fast-paced lifestyle, reach for the calming nutrition of GABA (gamma amino butyric acid). A natural compound manufactured in the brain from glucose and the amino acid glutamine, GABA plays a key role in the central nervous system's reaction to stressful situations and promotes relaxation and healthy sleep. GABA can also aid your weight-control program and promote muscle development.