Melatonin for Jet Lag
B ModerateBased on 43 studies (6 meta-analyses, 1 RCT) with 484 total participants. 29/43 studies show positive effects.
Key Statistics
43
Studies
484
Participants
Positive
Grade
Referenced Papers
Dosage & Usage
Commonly Used Dosages
- general:
- 0.5-3 mg, 30-60 min before bed
- jetlag:
- 0.5-5 mg
Upper limit: No established UL; 5 mg typically considered maximum
Dosages Studied in Research
| Dosage | Duration | Effect | N |
|---|---|---|---|
| low doses melatonin (unspecified); melatonin for jet lag (adults) | -- | Positive | -- |
| Melatonin (various doses); light therapy; chronotherapy (various schedules) | -- | Positive | -- |
| Blue-blocking (amber) glasses worn in the evening | -- | Mixed | 453 |
| melatonin (timed), bright light (timed), stimulants/alertness-promoting drugs | -- | Positive | -- |
| None | -- | Positive | -- |
| various (hypnotics, melatonin, lifestyle/environmental adaptations) | -- | Mixed | -- |
| None | -- | Positive | -- |
| exogenous melatonin (various doses and preparations); melatonin analogues (MT1/MT2 receptor agonists | -- | Positive | -- |
Best taken: 30-60 minutes before bed
Safety & Side Effects
Reported Side Effects
- ⚠ Daytime drowsiness
- ⚠ Headache
- ⚠ Dizziness
- ⚠ Nausea
- ⚠ Vivid dreams or nightmares
Known Interactions
- ● Blood thinners (warfarin) — may increase bleeding risk
- ● Immunosuppressants — melatonin may stimulate immune function
- ● Diabetes medications — may affect blood sugar levels
- ● Sedatives and CNS depressants — additive drowsiness
Tolerable upper intake: No established UL; 5 mg typically considered maximum
Always consult your healthcare provider before starting any supplement.
Frequently Asked Questions
Does Melatonin help with Jet Lag?
How much Melatonin should I take for Jet Lag?
Are there side effects of Melatonin?
How strong is the evidence for Melatonin and Jet Lag?
Related Evidence
FDA Disclaimer: These statements have not been evaluated by the Food and Drug Administration. The products and information on this website are not intended to diagnose, treat, cure, or prevent any disease. The evidence grades presented are based on our analysis of published peer-reviewed research and do not constitute medical advice. Always consult your healthcare provider before starting any supplement regimen.