Gaba WHAT IS GABA? If you’re looking for a supplement to help you stay calm on those stressful days, or that can help you relax a bit better so that you can sleep more soundly, then have a look at the amino acid GABA. Gamma-aminobutyric acid (GABA) is a neurotransmitter or messenger, produced naturally inside the brain. As the brain’s most inhibitory neurotransmitter, GABA down-regulates specific signals in the brain and central nervous system, which inhibits the activity of excitatory neurons. GABA is naturally released at the end of the day to relax your mind and body. However, when GABA levels get too low, it’s hard for your body to relax. https://www.nationalnutrition.ca/amino-acids/single-aminos/gaba.html #Gaba