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Hormone

Melatonin

Last reviewed September 28, 20261 sources
In short

Melatonin is a hormone the brain produces in response to darkness that helps regulate sleep–wake timing. In the U.S. it’s sold as a dietary supplement in tablets, gummies and liquids.

Research in progress. This ingredient page doesn’t yet meet SuppScout’s bar for a complete reference (sourced evidence summary, considerations and sufficient detail), so search engines are asked not to index it. The information shown is sourced where cited.

Quick facts

Regulation (U.S.)
Sold as a dietary supplement[1]

Common melatonin supplement forms

  • Immediate-release
  • Extended-release
  • Gummies
  • Liquid drops

Detailed form pages for Melatonin are being researched.

What researchers have studied it for

Jet lag and sleep timing

Moderate evidence

Research suggests melatonin may help with jet lag and certain sleep–wake rhythm disorders; evidence for chronic insomnia is weaker.[1]

Evidence labels summarize the overall body of published research for each topic; they are not a recommendation and do not mean a supplement is appropriate for you. Published research

Typical amounts in supplements

Products range widely, commonly 0.5–10 mg per serving. Studies have found melatonin content in some supplements differs substantially from the label.

[1]

These describe what supplements commonly contain and published reference values — not a recommendation for you.

Potential considerations

  • Keep melatonin gummies away from children; accidental ingestion has increased.
  • Long-term safety is not well established.

Products containing melatonin

No products listed yet

SuppScout hasn’t added melatonin products yet.

Sources & references

  1. Melatonin: What You Need To Know. National Center for Complementary and Integrative Health (NIH). nccih.nih.govGovernment

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This page is educational and is not medical advice. Talk to a healthcare professional before starting a supplement, especially if you have a medical condition, take medications, or are pregnant or breastfeeding. Medical disclaimer.