Can I take Magnesium and Bisoprolol together?
Drug interaction guide
Originally published 25 Jan 2026
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Taking magnesium and bisoprolol together can lead to an excessively slow heart rate or a significant drop in blood pressure. This may cause you to feel dizzy, lightheaded, or faint.
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Why this happens
Both magnesium and bisoprolol (a beta-blocker) can slow down the electrical signals in your heart and relax your blood vessels. When used together, these effects can add up, making your heart beat too slowly or lowering your blood pressure more than intended.
What you should do
You should consult your doctor before taking magnesium supplements with bisoprolol. If your doctor approves the combination, monitor your pulse and blood pressure regularly. Seek medical advice if you feel unusually tired, dizzy, or if you notice your heart rate is very slow. To avoid any potential issues with how the medicine is absorbed, it is also sensible to space the doses apart by at least 2 hours.
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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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