Can I take Magnesium and Omega -acid-ethyl esters together?
Drug interaction guide
Originally published 14 Mar 2026
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There are no known significant interactions between magnesium supplements and omega-3-acid ethyl esters (fish oil). It is generally safe to take these two together.
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Why this happens
Magnesium and omega-3 fatty acids are processed by the body through different pathways. Magnesium is a mineral primarily absorbed in the intestines and excreted by the kidneys, while omega-3-acid ethyl esters are fats broken down by enzymes in the digestive system and liver. They do not interfere with each other's absorption or effectiveness.
What you should do
Back to contentsYou can take both supplements as part of your routine. To help with absorption and reduce the chance of an upset stomach or 'fishy' burps, it is often best to take them with a meal. Always follow the dosage instructions on the packaging or those provided by your healthcare professional.
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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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