Ingredient research hub
GABA
Gamma-aminobutyric acid is an inhibitory neurotransmitter also sold as an oral supplement; direct human sleep evidence is limited.
Oral GABA is distinct from GABA receptor medicines, GABA-producing probiotics and multi-ingredient sleep formulas. Brain penetration and clinically meaningful sleep effects remain uncertain.
Related research
Choose a specific evidence question below. Formula reviews provide label context; they do not establish that the complete product reproduces an ingredient study.
Sleep
GABA for Sleep: Does Oral GABA Actually Improve Sleep?Small oral GABA trials suggest possible sleep-onset effects, but other outcomes and brain-entry mechanisms remain uncertain.
Planet Wellness Report · Oct 19, 2026