Melatonin
Melatonin
Melatonin is a hormone involved in circadian timing. Evidence and safety considerations vary by use, age and duration; long-term safety information is limited.
Evidence labelContext-specific evidence
Primary launch sourceNIH National Center for Complementary and Integrative Health
Last reviewedSeptember 1, 2026
Open authoritative sourceHow to read this page
This summary does not recommend a dose or claim that a commercial product has been clinically tested. Always compare the exact ingredient form and amount on a current label with the context of the cited evidence.
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Decision guardrails
No diagnosisTools describe labels and costs.
No hidden inferenceUnknown amounts remain unknown.
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