Can I take Aspirin and Per together?
Drug interaction guide
Originally published 12 May 2026
Meets Patient’s editorial guidelines
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Taking aspirin and ibuprofen (the active ingredient in Nurofen) together significantly increases your risk of developing stomach ulcers and internal bleeding. It can also reduce the heart-protective benefits of low-dose aspirin.
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Why this happens
Both drugs belong to a group called NSAIDs. They work by blocking enzymes (COX-1 and COX-2) that protect the lining of your stomach. When taken together, this 'double-up' effect leaves the stomach vulnerable to acid damage. Additionally, ibuprofen can physically block aspirin from reaching the part of the blood cells (platelets) it needs to thin the blood.
What you should do
Back to contentsAvoid taking these two medicines together unless specifically instructed by your doctor. If you need aspirin for heart protection and require a painkiller, paracetamol is usually a safer choice. If you must take both, take the aspirin at least 30 minutes before the ibuprofen, or 8 hours after. Seek medical help immediately if you notice black, tarry stools or vomit that looks like coffee grounds.
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Using other medicines
Back to contentsTaking 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.
12 May 2026 | Originally published

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