Research shows melatonin’s effectiveness varies by condition:
- Jet Lag: Highly effective, reducing recovery time by 50%
- Delayed Sleep Phase Syndrome: Moderately effective, helping reset sleep cycles
- Insomnia: Mildly effective, reducing sleep onset by 7-10 minutes
- Shift Work Sleep Disorder: Moderately effective for daytime sleep
The supplement’s success often depends on the underlying cause of sleep problems. For example, it’s particularly effective for jet lag and circadian rhythm disorders, but may be less helpful for insomnia caused by anxiety or pain. Individual responses can vary significantly, and effectiveness may improve when combined with good sleep hygiene practices.
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Last Updated: October 19, 2025
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