what is gaba used for
GABA is a neurotransmitter that blocks impulses between nerve cells in the brain. Low levels of GABA may be linked to: 1  Anxiety or mood disorders. 2  Epilepsy. 3  Chronic pain.ide effects. There has not been enough research to uncover the side effects of GABA supplements. Risks. Overall, there isn't enough information to be sure about the safety of GABA. For this reason, it's best to play it safe and not use GABA if you are pregnant or breastfeeding.