GABA is an inhibitory neurotransmitter in the brain that plays a role in motor control, vision, and anxiety. Research has shown that GABA has a positive impact on cortisol levels and may be helpful initiating sleep. In one study, GABA levels in people with insomnia were almost 30% lower than in people without the sleep disorder. GABA binds to benzodiazepine receptors resulting in a safe anxiolytic effect. It helps slow down feelings of fear and stress when neurons become over excited by reducing the activity of the neurons that it binds to. CanPrev GABA 500 delivers a clinically proven 500mg dose of GABA. This naturally-occurring amino acid is produced by our brain to help temporarily promote relaxation. GABA works like a ?brake? in our brain and central nervous system by slowing down activity. This leaves you with a relaxing, cooling, sense of calm. Available in 120 vegetable capsules.