Supplement · Brain health technique
GABA (gamma-aminobutyric acid)
Evidence grade: Mixed / Unclear
The brain’s primary inhibitory neurotransmitter, responsible for calming neural activity. Supplements aim to promote relaxation, reduce anxiety, and improve sleep, though absorption into the brain is limited.
- Practice
- Supplement
- Principle
- Nourishment
- Tactic
- Mood, Sleep & Stress Modulators
- Evidence grade
- Mixed / Unclear
- Strength of evidence
- Medium
How to practice GABA (gamma-aminobutyric acid)
Typical dose: 100–300 mg taken 30–60 minutes before bed or during stress. Choose pharma-GABA (natural fermentation form) for better bioavailability. Combine with L-theanine or magnesium for synergy. Effects are subtle and best felt with regular use.
The evidence behind GABA (gamma-aminobutyric acid)
GABA reduces neuronal excitability and anxiety via inhibitory signaling. Oral GABA may act through the gut–brain axis rather than direct brain entry. RCTs show mixed results, some find improved relaxation and sleep, others show no effect. Safe but often overhyped. More consistent benefits come from GABAergic herbs (like valerian or lavender).
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