NOW Foods GABA (Gamma-Aminobutyric Acid) 500 mg provides the brain's primary inhibitory neurotransmitter in a convenient vegetarian capsule. GABA acts as the central nervous system's natural calming agent, counterbalancing excitatory neurotransmitters like glutamate to reduce neural excitation and promote a relaxed, calm state. Low GABA activity is associated with anxiety, restlessness, poor sleep, and difficulty managing stress. Supplemental GABA has been studied for stress reduction, mood support, and promoting the transition to sleep. Each capsule delivers 500 mg of pure GABA in a vegetarian-suitable formulation, manufactured in NOW's GMP-certified facility and tested for identity and potency. A clean, straightforward supplement for those seeking natural support for calm mental function, stress resilience, and restful sleep.