Apixaban and Oxaliplatin: 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
Oxaliplatin
No brand names on record
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.
Taking these together may raise your risk of bleeding. Apixaban (Eliquis) is a blood thinner, and oxaliplatin is a chemotherapy medicine, usually given with other cancer drugs. When they are used together, some people have had their blood take longer to clot, and in a few cases this led to bleeding.
It's important to know this concern is theoretical, meaning it is based on limited reports rather than strong proof. The good news is your care team can manage this well by watching you more closely. Let your doctor and pharmacist know you take both, and tell them right away about unusual bruising, nosebleeds, or blood in your urine or stool.
Effect: Increased bleeding risk when apixaban is combined with oxaliplatin (typically as part of an oxaliplatin plus fluorouracil/leucovorin regimen).
- Mechanism: Reports of prolonged PT/INR, occasionally associated with hemorrhage, in anticoagulated patients receiving these chemotherapy agents. Neither drug is a prodrug; this is an additive/enhanced anticoagulant effect rather than a defined CYP interaction.
- Direction: Enhanced anticoagulant effect (increased bleeding).
- Evidence: Theoretical; severity rated major. Onset unspecified.
- Management: Increase frequency of monitoring for bleeding. Note apixaban is not routinely INR-monitored, so rely on clinical assessment and CBC; individualize therapy with the oncology and anticoagulation teams.
What happens
Increased risk of bleeding
Interaction Deep Dive
In patients receiving oxaliplatin together with fluorouracil/leucovorin while also on anticoagulant therapy, there have been reports of extended prothrombin time and INR, at times accompanied by hemorrhage. When oxaliplatin combined with fluorouracil/leucovorin is given alongside oral anticoagulants, monitoring should be performed more frequently1.
Why it happens (mechanism)
Prolonged prothrombin time and INR
How to manage this interaction
Keep taking both medicines exactly as prescribed unless your care team tells you otherwise. Do not stop or change either one on your own.
- Your team will likely monitor you more closely for bleeding while you are on both.
- Your doses may need to be adjusted and individualized by your oncology and anticoagulation teams.
- Watch for and promptly report unusual bruising, nosebleeds, bleeding gums, pink or red urine, or black/bloody stools.
- Make sure every prescriber and your pharmacist know you take both apixaban and oxaliplatin.
Management is individual — confirm any change with your pharmacist or prescriber.
Common questions
Can I take Apixaban and Oxaliplatin together?
Combining apixaban with oxaliplatin may increase bleeding risk, so keep taking both as prescribed and let your care team monitor you more closely. Report any signs of bleeding right away. Always confirm with your pharmacist or prescriber before making any change.
How serious is the Apixaban and Oxaliplatin 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 Oxaliplatin interaction managed?
Keep taking both medicines exactly as prescribed unless your care team tells you otherwise. Do not stop or change either one on your own. Your team will likely monitor you more closely for bleeding while you are on both. Your doses may need to be adjusted and individualized by your oncology and anticoagulation teams. Watch for and promptly report unusual bruising, nosebleeds, bleeding gums, pink o… 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 Oxaliplatin 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 (1)
- Product Information: ELOXATIN(R) intravenous injection, oxaliplatin intravenous injection. sanofi-aventis US LLC (per FDA), Bridgewater, NJ, 2020. DailyMed
Keep reading about Apixaban
Keep reading about Oxaliplatin
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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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