Melatoninand Sleep Duration.
Evidence gradeA
ImpactModerate
Confidencehigh
Imported rating. This grade comes from SuppCo and has not been independently reviewed. It describes research, not a product, and it is not medical advice.
The rating
- Direction
- Favourable
- Rated by
- SuppCo
- Observed
- 28 September 2026
Studies behind it
Optimizing the Time and Dose of Melatonin as a Sleep-Promoting Drug: A Systematic Review of Randomized Controlled Trials and Dose-Response Meta-Analysis.F. Cruz-Sanabria · Journal of pineal research2024Effects of exogenous melatonin on sleep: a meta-analysis.A. Brzezinski · Sleep medicine reviews2005High dose melatonin increases sleep duration during nighttime and daytime sleep episodes in older adultsJ. Duffy · Journal of Pineal Research2022