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Can I take Flecainide and Lansoprazole together?

Drug interaction guide

There is no known direct interaction between flecainide and lansoprazole. It is generally considered safe to take these two medications together.

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Why this happens

Lansoprazole is a proton pump inhibitor (PPI) used to reduce stomach acid, and flecainide is an anti-arrhythmic medicine used to treat heart rhythm problems. They are processed by different pathways in the liver and do not significantly affect each other's absorption or excretion.

What you should do

You can continue to take both medications as prescribed by your doctor. However, always inform your healthcare provider if you notice any new symptoms, such as dizziness or a change in your heartbeat, as flecainide requires careful monitoring.

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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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