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Can I take Co-codamol and Naproxen together?

Drug interaction guide

There is no direct harmful interaction between co-codamol and naproxen. In fact, they are often prescribed together to provide better pain relief than using one alone. However, because co-codamol contains paracetamol, you must be careful not to take any other products containing paracetamol at the same time.

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Why this happens

These medicines work in different ways to target pain. Naproxen is an anti-inflammatory (NSAID) that reduces swelling and pain at the source, while co-codamol (a mix of paracetamol and codeine) works on the central nervous system to change how your body feels and responds to pain. They do not interfere with how the body absorbs or breaks down one another.

What you should do

It is generally safe to take these together if prescribed by a healthcare professional. Ensure you do not exceed the maximum daily dose of co-codamol, and do not take any other paracetamol-containing products (like Lemsip or certain cold cures). To protect your stomach, always take naproxen with or after food. If you experience any stomach pain or dark, tarry stools, stop taking naproxen and contact your doctor.

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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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