Can I take Black cohosh and Magnesium together?
Drug interaction guide
Originally published 25 Jan 2026
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There are no known significant interactions between black cohosh and magnesium supplements. They are generally considered safe to take together.
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Why this happens
Black cohosh and magnesium are processed by the body through different pathways. Black cohosh is primarily broken down by the liver, while magnesium is an essential mineral absorbed in the intestines and filtered by the kidneys. They do not interfere with each other's absorption or effectiveness.
What you should do
You can safely take these two supplements together. However, always follow the dosage instructions on the product labels. If you have pre-existing liver conditions (relevant to black cohosh) or kidney issues (relevant to magnesium), it is best to consult your GP or a pharmacist before starting new supplements.
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Using other medicines
Taking 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.
25 Jan 2026 | Originally published

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