Apixaban and Oxaprozin: Interaction Details
AI-assisted, pharmacist-reviewed · AI content regenerated Aug 8, 2026 · Source data updated Jul 11, 2026 · Sources: FDA labeling, DDInter 2.0, cited literature
Apixaban
Oxaprozin
How we grade severity & evidence
Severity levels
- Contraindicated: These should generally not be used together.
- Major: Potentially serious — often needs a change or close monitoring.
- Moderate: Can be significant — usually manageable with monitoring.
- Minor: Usually limited clinical impact.
Evidence grades
- Established: Well documented — supported by controlled studies or strong clinical data.
- Probable: Good supporting evidence, though not definitively proven.
- Suspected: Some evidence suggests this interaction, but it is not well established.
- Possible: Limited or conflicting evidence; the interaction may occur.
- Theoretical: Predicted from the drugs' pharmacology; not yet confirmed in people.
Ratings come from the documented interaction literature and are reviewed by a pharmacist. They describe the documented risk of the combination, not what will necessarily happen to you — your dose, timing, and health picture all matter.
Eliquis (apixaban) is a blood thinner that helps prevent clots. Daypro (oxaprozin) is an anti-inflammatory pain reliever (an NSAID). When taken together, both can make it easier to bleed, so the risk of bleeding goes up compared to taking either one alone.
Watch for things like unusual bruising, nosebleeds that won't stop, pink or red urine, black or bloody stools, or bleeding gums. This is a well-recognized concern, and your care team can manage it. Don't stop either medicine on your own, but do let your pharmacist or doctor know you take both so they can keep an eye on you.
Interaction: Additive effect on hemostasis. Apixaban (direct factor Xa inhibitor) plus oxaprozin (NSAID with antiplatelet effect and GI mucosal injury potential) increases bleeding risk versus either agent alone. Neither drug is a prodrug; this is a pharmacodynamic, not PK, interaction.
- Direction: Increased bleeding risk (additive).
- Severity/Evidence: Major; theoretical/mechanistic.
- Special risk: Spinal/epidural hematoma with neuraxial anesthesia or spinal puncture, potentially causing lasting paralysis.
- Management: If used together, monitor for signs/symptoms of bleeding (CBC/hemoglobin, GI and mucocutaneous bleeding). Consider GI protection and reassess NSAID necessity; the regimen may need to be individualized by the care team.
What happens
An increased risk of bleeding
Interaction Deep Dive
Taking an anticoagulant together with an NSAID can raise the likelihood of serious bleeding compared with either agent used by itself1234, and in patients receiving neuraxial anesthesia or undergoing spinal puncture it can heighten the risk of epidural or spinal hematomas, which may lead to long-term or permanent paralysis5. When these drugs are given together, watch for signs of bleeding124.
Why it happens (mechanism)
Additive effect on hemostasis
How to manage this interaction
This combination can be managed. The main step is closer monitoring for bleeding while you take both.
- Keep taking both exactly as prescribed unless your doctor or pharmacist tells you otherwise.
- Your care team may watch you more closely and individualize your plan, and may consider whether the NSAID is truly needed or whether stomach-protecting steps make sense.
- Report any bleeding signs promptly: unusual bruising, nosebleeds, blood in urine or stool, black stools, or bleeding that won't stop.
- Tell any provider about this combo before spinal or epidural procedures, because of a rare but serious risk of spinal bleeding.
Management is individual — confirm any change with your pharmacist or prescriber.
Common questions
Can I take Apixaban and Oxaprozin together?
Taking Eliquis and Daypro together raises your bleeding risk, so watch closely for any signs of bleeding and keep your pharmacist or doctor in the loop rather than changing anything yourself. Always confirm with your pharmacist or prescriber before making any change.
How serious is the Apixaban and Oxaprozin interaction?
It is rated major. Potentially serious — often needs a change or close monitoring.
How quickly could this interaction happen?
The documented onset is "unspecified". The timing of this interaction is not well characterized.
How is the Apixaban and Oxaprozin interaction managed?
This combination can be managed. The main step is closer monitoring for bleeding while you take both. Keep taking both exactly as prescribed unless your doctor or pharmacist tells you otherwise. Your care team may watch you more closely and individualize your plan, and may consider whether the NSAID is truly needed or whether stomach-protecting steps make sense. Report any bleeding signs promptly:… Management is individual — always follow your own care team's guidance.
How strong is the evidence for this interaction?
The evidence is graded "theoretical". Predicted from the drugs' pharmacology; not yet confirmed in people.
From our Q&A
Real reader questions about these medications, each personally answered by our pharmacist:
Questions for your pharmacist
- Does my dose of Apixaban or Oxaprozin need adjusting while I take them together?
- What symptoms should prompt me to call you or my prescriber right away?
- Does the timing of my doses matter for this combination?
- Is there a safer alternative to one of these medications for me?
References (5)
- Product Information: CALDOLOR(R) intravenous injection, ibuprofen intravenous injection. Cumberland Pharmaceuticals Inc. (per FDA), Nashville, TN, 2016. DailyMed
- Product Information: CELEBREX(R) oral capsules, celecoxib oral capsules. GD Searle LLC (per FDA), New York, NY, 2016. DailyMed
- Product Information: COUMADIN(R) oral tablets, intravenous injection powder for solution, warfarin sodium oral tablets, intravenous injection powder for solution. Bristol-Myers Squibb Company (per manufacturer), Princeton, NJ, 2015. DailyMed
- Product Information: COMBOGESIC(R) oral tablets, acetaminophen ibuprofen oral tablets. AFT Pharmaceuticals Inc (per FDA), Highland, MD, 2023. DailyMed
- Product Information: PRADAXA(R) oral capsules, dabigatran etexilate oral capsules. Boehringer Ingelheim Pharmaceuticals Inc (per FDA), Ridgefield, CT, 2023. DailyMed
Keep reading about Apixaban
Keep reading about Oxaprozin
These medications also interact with supplements
Prescription drugs aren't the whole picture — herbal and dietary supplements can interact with them too. From the evidence-graded Natural Medicines database:
major · moderate · minor — check everything you take with our drug–supplement interaction checker.
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