Research indicates that melatonin has a relatively short half-life of 40-60 minutes. The body typically processes and eliminates melatonin within 4-8 hours, though this can vary based on several factors:
- Individual metabolism rate
- Age (older adults may process it more slowly)
- Dose taken
- Liver function
Extended-release formulations can last longer, up to 8-10 hours. To avoid morning grogginess, it’s recommended to take melatonin at least 8 hours before your planned wake time. Regular users should note that daily supplementation doesn’t lead to accumulation in the body, as it’s cleared relatively quickly.
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Last Updated: October 25, 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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