Apixaban and Omega-3-Carboxylic Acids: 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
Omega-3-Carboxylic Acids
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.
Eliquis (apixaban) is a blood thinner that lowers your body's ability to form clots. Omega-3-carboxylic acids are a prescription fish oil product. Some studies suggest omega-3s can make it take a little longer for your blood to clot. On their own, that's usually mild, but when you add a blood thinner on top, there's a chance of slightly more bleeding, like easier bruising or nosebleeds.
The good news is this concern is theoretical, meaning we don't have strong proof it causes real problems. Keep taking both as prescribed, and let your care team know so they can keep an eye on you. Report any unusual bruising or bleeding.
Effect: Additive antithrombotic/antiplatelet potential increasing bleeding risk when omega-3-carboxylic acids are combined with apixaban, a direct factor Xa inhibitor.
- Mechanism: Unknown/undefined; omega-3 fatty acids may prolong bleeding time (possible antiplatelet/PD effect), additive to apixaban's anticoagulant action. Neither agent's clearance drives this; it is a pharmacodynamic concern, not PK.
- Direction: Increased bleeding tendency.
- Evidence: Theoretical; magnitude and clinical significance not established.
- Onset: Unspecified.
- Management: Periodic monitoring for bleeding signs/symptoms; no routine dose change required unless clinically indicated.
What happens
An increased risk of bleeding
Interaction Deep Dive
Certain research indicates that bleeding time can be lengthened by omega-3-carboxylic acids. The consequences of taking omega-3-carboxylic acids together with anticoagulants have not been established; nonetheless, periodic monitoring is advised1.
Why it happens (mechanism)
Unknown
How to manage this interaction
This is a low-level, theoretical concern, so the usual approach is simple.
- Keep taking both exactly as prescribed unless your prescriber tells you otherwise.
- Your care team may monitor you a bit more closely for signs of bleeding.
- Watch for and report: unusual bruising, nosebleeds, bleeding gums, blood in urine or stool, or cuts that are slow to stop.
- Tell any new provider or pharmacist that you take both, and mention them before any surgery or dental work.
If bleeding worries come up, your team can adjust and individualize your plan.
Management is individual — confirm any change with your pharmacist or prescriber.
Common questions
Can I take Apixaban and Omega-3-Carboxylic Acids together?
Combining Eliquis with prescription omega-3-carboxylic acids may slightly raise bleeding risk, but the evidence is theoretical. Keep taking both as prescribed, watch for unusual bleeding or bruising, and let your care team know so they can monitor you. Always confirm with your pharmacist or prescriber before making any change.
How serious is the Apixaban and Omega-3-Carboxylic Acids interaction?
It is rated moderate. Can be significant — usually manageable with 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 Omega-3-Carboxylic Acids interaction managed?
This is a low-level, theoretical concern, so the usual approach is simple. Keep taking both exactly as prescribed unless your prescriber tells you otherwise. Your care team may monitor you a bit more closely for signs of bleeding. Watch for and report: unusual bruising, nosebleeds, bleeding gums, blood in urine or stool, or cuts that are slow to stop. Tell any new provider or pharmacist that you t… 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 Omega-3-Carboxylic Acids 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 anything you'd monitor while I'm on both?
References (1)
- Product Information: EPANOVA(R) oral capsules, omega-3-carboxylic acids oral capsules. AstraZeneca Pharmaceuticals LP (per FDA), Wilmington, DE, 2014.
Keep reading about Apixaban
Keep reading about Omega-3-Carboxylic Acids
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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