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Melatonin typically begins working within 30-60 minutes after ingestion. Research shows that the timing of intake is crucial for effectiveness. For optimal results:

  • Take 30-60 minutes before desired sleep time
  • Maintain a consistent dosing schedule
  • Avoid exposure to bright light after taking

The duration of effect varies by formulation: immediate-release forms last 4-5 hours, while extended-release versions can last 6-8 hours. Studies indicate that individual response times can vary based on metabolism, age, and other factors.

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Last Updated: September 11, 2025

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