Can I take Copper and Milk thistle extract together?
Drug interaction guide
Originally published 14 Mar 2026
Meets Patient’s editorial guidelines
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Taking milk thistle and copper together may slightly reduce how much copper your body absorbs. Milk thistle contains substances that can bind to minerals like copper in the digestive tract, making it harder for them to enter your bloodstream.
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Why this happens
Milk thistle contains silymarin, which has 'chelating' properties. This means it can bind to metal ions like copper, forming a complex that the body cannot absorb easily.
What you should do
Back to contentsThis interaction is generally minor and unlikely to cause issues for most people. However, to ensure you get the full benefit of both, you may wish to take them at different times of the day (for example, 2 hours apart). If you have a condition that causes copper deficiency or copper overload (such as Wilson's disease), speak to your doctor before combining these.
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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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