Melatonin
BModerate evidenceA meta-analysis of 19 trials found melatonin shortened the time to fall asleep by about 7 minutes and increased total sleep by about 8 minutes. Effects are modest but did not fade with continued use.
- Dose used in studies
- 0.5–5 mg, 30–60 minutes before bed
- Time to effect
- Days to 1–2 weeks
- Most relevant for
- Delayed sleep timing, shift work, older adults
Studies (2)
- Meta-analysis: melatonin for the treatment of primary sleep disorders — PLoS One, 2013 · Meta-analysis · PMID 23691095
- Efficacy of melatonin and ramelteon for the acute and long-term management of insomnia disorder in adults: A systematic review and meta-analysis — J Sleep Res, 2023 · Meta-analysis · PMID 37434463