Gamma-aminobutyric acid (GABA) is a natural non-protein amino acid and a key inhibitory neurotransmitter in the central nervous system with significant effects. It can effectively inhibit nerve excitement, quickly soothe tense emotions, and help relieve anxiety and stress. It can also regulate the level of brain neurotransmitters, helping you fall asleep quickly and improve sleep quality. In daily diet, foods such as tomatoes and pickles contain GABA. Nowadays, it has been widely used in food and health products to add vitality to your health.