Melatonin for Sleep Onset Difficulty
A StrongBased on 30 studies (7 meta-analyses, 6 RCTs) with 10,634 total participants. 19/30 studies show positive effects.
Key Statistics
30
Studies
10634
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 | Duração | Effect | N |
|---|---|---|---|
| Melatonin (various doses), CBT-I (behavioral), pharmacologic options (z-drugs, other) | -- | Positive | -- |
| Mediterranean diet (high adherence vs. low adherence); polyphenols, omega-3, fiber as key components | -- | Positive | -- |
| None | -- | Positive | -- |
| melatonin (various doses, peak efficacy at 4 mg/day) | -- | Positive | 1689 |
| 0.5 g/kg and 1.0 g/kg intragastrically | 4 weeks | Positive | -- |
| low-dose melatonin administered 30-60 min before bedtime | -- | Positive | -- |
| not specified (intragastric administration) | -- | Positive | -- |
| variable (prolonged-release melatonin; ramelteon standard doses) | -- | Positive | 4875 |
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 Sleep Onset Difficulty?
How much Melatonin should I take for Sleep Onset Difficulty?
Are there side effects of Melatonin?
How strong is the evidence for Melatonin and Sleep Onset Difficulty?
Related Evidence
Other ingredients for Sleep Onset Difficulty
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.