While melatonin is generally considered safe for short-term use, clinical studies have identified several potential side effects:
- Common side effects: Headaches, dizziness, daytime sleepiness
- Less common effects: Vivid dreams, nightmares, mild anxiety
- Rare side effects: Depression, mild tremors, mild cramps
Long-term use may affect hormonal development in children and teenagers. Melatonin can also interact with various medications, including blood thinners and diabetes medications. Pregnant women should consult healthcare providers before use, as effects on pregnancy aren’t fully understood.
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Last Updated: August 22, 2025
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