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While melatonin is generally considered safe for short-term use, studies have identified several possible side effects:

  • Daytime drowsiness
  • Headaches
  • Dizziness
  • Nausea
  • Mild anxiety

Less common side effects may include:

  • Vivid dreams or nightmares
  • Short-term depression
  • Mild tremors

These effects are typically mild and more common with higher doses. Important: Melatonin can interact with certain medications, including blood thinners and diabetes medications. Consult a healthcare provider if you experience persistent side effects or take other medications.

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Last Updated: October 17, 2025

Disclaimer: This information is for educational purposes only and should not replace professional medical advice. Always consult with a healthcare provider before making health decisions.

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