Can I take Cod liver oil and Melatonin together?
Drug interaction guide
Originally published 14 Mar 2026
Meets Patient’s editorial guidelines
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There are no known significant interactions between cod liver oil and melatonin. It is generally considered safe to take these two supplements together.
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Why this happens
Cod liver oil is a source of omega-3 fatty acids and vitamins A and D, while melatonin is a hormone that regulates sleep. They are processed by different pathways in the body and do not interfere with how the other works.
What you should do
Back to contentsYou can take both supplements as directed. However, always stick to the recommended dosages on the packaging. If you experience any unusual side effects or have underlying health conditions (such as liver problems or blood-clotting issues), it is best to consult your GP or a pharmacist.
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Using other medicines
Back to contentsTaking multiple medicines? Our Medicines Interaction Checker helps you check whether your prescriptions, over-the-counter medicines, and supplements are safe to take together. Simply search for your medicines to see potential interactions and what to do about them.
Disclaimer
This information is for general educational purposes only and should not be relied upon as a substitute for professional medical advice. Always consult your GP, pharmacist, or another qualified healthcare professional before making decisions about your medications. Individual circumstances may vary, and only a healthcare professional who knows your medical history can provide personalised guidance.
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Article history
The information on this page is written and peer reviewed by qualified clinicians.
14 Mar 2026 | Originally published

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