Can I take Magnesium and Flecainide together?

Why this happens

Both magnesium and flecainide affect the electrical signals and mineral channels (like sodium and potassium) in your heart cells. While they don't usually stop each other from being absorbed, having too much or too little magnesium in your blood can change how effective flecainide is at controlling your heart rhythm.

What you should do

You can usually take these together, but do not start high-dose magnesium supplements without checking with your doctor first. Your doctor may want to monitor your blood mineral levels (electrolytes) to ensure flecainide works safely and effectively. If you feel any new heart palpitations, dizziness, or shortness of breath, contact your healthcare provider.

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.