Melatonin is a timing signal rather than a universal sedative, and product quality and regulation vary.

Melatonin: timing, evidence and safety

Last reviewed 3 August 2026. How we write this.

Melatonin is a timing signal rather than a universal sedative, and product quality and regulation vary.

Evidence is strongest for selected circadian timing problems. Timing can matter as much as amount, while larger doses commonly add next-day effects without solving the cause.

Children, pregnancy, medication use and persistent symptoms warrant professional guidance.

Educational content only. This does not diagnose, treat or replace individual advice from an appropriately qualified clinician.

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Educational content only. Not medical advice, diagnosis or treatment. Always consult a qualified healthcare professional before changing your health regimen.