GABA, also known as 4-Aminobutyric acid, has a molecular formula of C4H9NO2. GABA is a chemical produced in the brain and functions by blocking neurotransmission. It is said to be responsible for the regulation of muscle tone in humans, promoting lean muscle growth and fat burning. Hence, it is a popular nutritional supplement.
Depending on how is taken, it also has potential to relieve anxiety, improve mood, reduce symptoms of premenstrual syndrome (PMS), and treat attention deficit-hyperactivity disorder (ADHD), stabilize blood pressure, and relieve pain.