GABA is used for relieving anxiety, elevating mood, relieving premenstrual syndrome (PMS), and treating attention deficit-hyperactivity disorder (ADHD). It is also used for promoting lean muscle growth, burning fat, stabilizing blood pressure, and relieving pain. Sublingually, GABA is used for increasing feeling of well-being, relieving injuries, improving exercise tolerance, decreasing body fat, and increasing lean body weight.