Strong evidenceamino_acid
L-Theanine for Anxiety
L-theanine crosses the blood-brain barrier and increases GABA, serotonin, and dopamine levels while promoting alpha brain wave production. This creates anxiolytic effects without sedation or cognitive impairment.
How strong is the research?
Strong evidence
Based on a randomised controlled trial (RCT) — the gold standard for establishing cause and effect.
Research source
SourceHidese S et al. · Nutrients 2019How much to take
200–400 mg
Can be taken acutely for situational anxiety (200mg 30 min before) or daily for generalized anxiety. Safe to combine with most medications.