Drug interactions
Enoxaparin + Naproxen
Severity: Major
Enoxaparin and Naproxen: major interaction.
Last updated Sources: US FDA label
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Summary
Naproxen increases bleeding risk in patients receiving enoxaparin, including gastrointestinal bleeding and, with neuraxial procedures, spinal hematoma.
What this interaction means in plain words
Enoxaparin and Naproxen can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Enoxaparin belongs to Cardiovascular; Naproxen belongs to Musculoskeletal.
Why it happens
NSAID platelet inhibition and mucosal injury add to the anticoagulant effect of low-molecular-weight heparin.
What to do
Avoid concurrent NSAID use where possible and use paracetamol instead. If combined, monitor for bleeding signs and hemoglobin.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
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References
Other interactions of Naproxen
- Ketorolac intranasal + Naproxen Contraindicated
- Ketorolac + Naproxen Contraindicated
- Aceclofenac + Naproxen Major
- Acemetacin + Naproxen Major
- Acetylsalicylic acid + Naproxen Major
- Alteplase + Naproxen Major
Other interactions of Enoxaparin
- Defibrotide + Enoxaparin Contraindicated
- Enoxaparin + Ketorolac Contraindicated
- Enoxaparin + Mifepristone Contraindicated
- Abciximab + Enoxaparin Major
- Aceclofenac + Enoxaparin Major
- Acetylsalicylic acid + Enoxaparin Major
Frequently asked questions
Can I take Enoxaparin with Naproxen?
MediHelp rates the interaction as major. Enoxaparin and Naproxen can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Naproxen increases bleeding risk in patients receiving enoxaparin, including gastrointestinal bleeding and, with neuraxial procedures, spinal hematoma.
How serious is the interaction between Enoxaparin and Naproxen?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid concurrent NSAID use where possible and use paracetamol instead. If combined, monitor for bleeding signs and hemoglobin.
What other medicines interact with Naproxen?
MediHelp also lists interactions of Naproxen with, for example, Ketorolac intranasal, Ketorolac, Aceclofenac. The full list is on the Naproxen page.
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