Melatonin
A hormone supplement used to help with sleep timing, jet lag, and delayed sleep-wake phase disorder.
What it is
Melatonin is a hormone the brain produces in response to darkness, helping with the timing of circadian rhythms and sleep. As a supplement, it's used for situations such as jet lag, delayed sleep-wake phase disorder, and pre-surgery anxiety.
How it is commonly taken
For delayed sleep-wake phase disorder, melatonin is typically taken about 1 hour before the desired bedtime. Melatonin may stay active longer in older adults than in younger people, which can cause daytime drowsiness.
Known interaction categories
- Insufficient evidence
Published interaction pages on this site
- Melatonin and CoQ10 (Coenzyme Q10)Insufficient evidence
- Melatonin and OmeprazoleInsufficient evidence
- Melatonin and WarfarinInsufficient evidence
- Melatonin and AtorvastatinInsufficient evidence
- Melatonin and MagnesiumInsufficient evidence
- Melatonin and CalciumInsufficient evidence
- Melatonin and ProbioticsInsufficient evidence
- Melatonin and CiprofloxacinInsufficient evidence
- Melatonin and SertralineInsufficient evidence
- Melatonin and IronInsufficient evidence
- Melatonin and Vitamin B12Insufficient evidence
- Melatonin and PotassiumInsufficient evidence
- Melatonin and SpironolactoneInsufficient evidence
- Melatonin and ZincInsufficient evidence
- Melatonin and St. John's WortInsufficient evidence
- Melatonin and CopperInsufficient evidence
- Melatonin and LisinoprilInsufficient evidence
- Melatonin and DoxycyclineInsufficient evidence
- Melatonin and MetforminInsufficient evidence
- Melatonin and CreatineInsufficient evidence
- Melatonin and Vitamin DInsufficient evidence
- Melatonin and CaffeineInsufficient evidence
- Melatonin and TurmericInsufficient evidence
- Melatonin and Vitamin KInsufficient evidence
- Melatonin and LevothyroxineInsufficient evidence
Sources
Last reviewed 2026-08-22
Medical information disclaimer: this information is general and educational. It does not diagnose conditions, prescribe treatment, or determine whether a combination is safe for you personally. Follow your prescription label and ask a pharmacist or clinician before starting, stopping, or combining products. Full disclaimer.