While melatonin is generally considered safe for short-term use, research indicates several possible side effects:
- Common side effects: Headache, dizziness, nausea, daytime sleepiness
- Less common effects: Vivid dreams, nightmares, mild anxiety
- Rare side effects: Depression, mild tremor, mild confusion
Long-term use may affect hormonal development in children and teenagers. Melatonin can also interact with various medications, including blood thinners, diabetes medications, and immunosuppressants. Always consult a healthcare provider before starting supplementation, especially if you have underlying health conditions.
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Last Updated: October 11, 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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