L-Theanine for Jet Lag Recovery
L-theanine may ease travel-related restlessness but does not shift circadian timing.
Overview
Verdict
How It Works
Dosing & Protocol
Typical dose
- Recommended dose
- 100-200 mg before rest
- Expected timeframe
- First 1-3 nights after arrival
Protocol
- form
- L-theanine capsules
- duration
- The first few nights after arrival
- co factor
- Take about an hour before the target bedtime. Evidence is mixed, and the mechanism only addresses part of the problem. Jet lag is circadian misalignment: the body clock is in the wrong time zone, and resynchronisation requires timed light exposure and, where appropriate, melatonin, which shifts circadian phase. Theanine does neither - it has no known chronobiotic effect and no trial has tested it for jet lag. What it may plausibly help with is the sleep-onset difficulty and travel-related arousal on the first nights, since randomised trials show improved sleep quality and reduced stress at 200 mg. Melatonin, by contrast, has good evidence for reducing jet lag when timed correctly. Theanine is at best a minor adjunct.
- titration
- Up to 400 mg
- starting dose
- 200 mg at destination bedtime if using it at all
Evidence
What the studies say
No studies are yet linked to both L-Theanine and Jet Lag Recovery.
Safety
Caveats
Use alongside, not instead of, light timing and melatonin.
Less likely to help if
Medical Disclaimer
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Individual results may vary. The statements on this website have not been evaluated by the Food and Drug Administration. Products and information are not intended to diagnose, treat, cure, or prevent any disease.