Gamma-aminobutyric acid is the most common active ingredient, followed by more common ingredients like L-arginine, which is often used by athletes as a source of energy. Gamma-aminobutyric acid (GABA) is found in the nervous systems of humans and other species. It is a neurotransmitter that is essential for brain function. Supplements that add it claim that it can increase GABA levels and help with a variety of issues like stress, depression, sleep disorders, anxiety, PMS, and even chronic pain. However, the definitive results of early research are largely lacking due to insufficient information on how much it takes to reach the brain to produce a beneficial effect. Therefore, in the absence of an established dosage confirmed by clinical studies, consult a doctor first.
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