Skip to main content

Can I take Co-codamol and Omeprazole together?

Drug interaction guide

There is no direct harmful interaction between co-codamol and omeprazole. However, co-codamol contains codeine, which can cause constipation. Omeprazole is used to reduce stomach acid and does not typically affect how co-codamol works.

Continue reading below

Why this happens

These two medications are processed by different pathways in the body. Omeprazole works on the acid-producing pumps in the stomach, while co-codamol (a mix of paracetamol and codeine) works on pain receptors and the central nervous system. They do not significantly interfere with each other's absorption or metabolism.

What you should do

It is safe to take these two medications together. If you find that the codeine in the co-codamol causes constipation, ensure you drink plenty of water and eat high-fibre foods. If you have any concerns about your stomach health or persistent pain, speak with your pharmacist or GP.

Continue reading below

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.

Continue reading below

Article history

The information on this page is written and peer reviewed by qualified clinicians.

  • 25 Jan 2026 | Originally published
flu eligibility checker

Ask, share, connect.

Browse discussions, ask questions, and share experiences across hundreds of health topics.

symptom checker

Feeling unwell?

Assess your symptoms online for free

Sign up to the Patient newsletter

Your weekly dose of clear, trustworthy health advice - written to help you feel informed, confident and in control.

Please enter a valid email address

By subscribing you accept our Privacy Policy. You can unsubscribe at any time. We never sell your data.