Drug interactions
Bemiparin + Naproxen
Severity: Major
Bemiparin and Naproxen: major interaction.
Last updated
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
Bemiparin is a low molecular weight heparin, and NSAIDs add antiplatelet effects and mucosal injury. Bleeding risk, notably gastrointestinal and at injection or surgical sites, is increased.
What this interaction means in plain words
Bemiparin 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.
Why it happens
Additive pharmacodynamic effect: factor Xa inhibition via antithrombin plus NSAID-induced platelet dysfunction and gastric mucosal damage.
What to do
Avoid the combination where possible and use paracetamol for analgesia. If unavoidable, give the shortest NSAID course, consider gastroprotection and monitor for bleeding 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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Other interactions of Naproxen
- Ketorolac intranasal + Naproxen Contraindicated
- Ketorolac + Naproxen Contraindicated
- Aceclofenac + Naproxen Major
- Acemetacin + Naproxen Major
- Acetylsalicylic acid + Naproxen Major
- Alteplase + Naproxen Major
Frequently asked questions
Can I take Bemiparin with Naproxen?
MediHelp rates the interaction as major. Bemiparin 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. Bemiparin is a low molecular weight heparin, and NSAIDs add antiplatelet effects and mucosal injury. Bleeding risk, notably gastrointestinal and at injection or surgical sites, is increased.
How serious is the interaction between Bemiparin 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 the combination where possible and use paracetamol for analgesia. If unavoidable, give the shortest NSAID course, consider gastroprotection and monitor for bleeding 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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