GABA, or gamma-aminobutyric acid, is the most abundant inhibitory neurotransmitter in the brain. While GABA is an amino acid, it is classified as a neurotransmitter and helps induce relaxation and sleep. It balances the brain by inhibiting over-excitation. GABA contributes to motor control, vision, and many other cortical functions. Anxiety is also regulated by GABA. Some drugs that increase the level of GABA in the brain are used to treat epilepsy and to calm the trembling of people suffering from Huntingtons disease. Gamma-aminobutyric acid also stimulates the anterior pituitary, leading to higher levels of Human Growth Hormone HGH. Human Growth Hormone contributes significantly to muscle growth and also prevents the creation of fat cells. WHEN IS GABA TAKEN GABA is taken before going to bed on an empty stomach. When we say empty. we mean at least 45 minutes after your last meal. Taken GABA at this time works worth you body's natural tendency for increased growth hormone release appr