GABA is an important neurotransmitter you don't hear about much. Learning of my own low GABA symptoms changed my life - I should say saved my life.... Is GABA Similar to Serotonin? GABA is Gamma-Aminobutyric Acid. Along with Serotonin, these neurotransmitters provide the "brakes" to overstimulated nerve impulses. Keeping the brain relaxed but on purpose is their job. Dopamine, Adrenaline, Acetylcholine, and anxiety are emotional, hormonal ... Keep Reading >