Fluconazole and Apixaban: 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
Fluconazole
Apixaban
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.
Let's talk about taking fluconazole (an antifungal) with apixaban (Eliquis, a blood thinner). Fluconazole can slow down the way your body clears apixaban, so more of the blood thinner may build up in your system. That can raise your risk of bleeding, like easy bruising, nosebleeds, or bleeding that is slow to stop.
One thing to keep in mind: fluconazole can keep affecting apixaban for about 4 to 5 days even after you stop it. The good news is this is very manageable. Your care team can watch you more closely and adjust things as needed. Please don't stop either medicine on your own, just check in with your pharmacist or doctor.
Effect: Increased apixaban exposure via inhibition of CYP3A4-mediated metabolism (fluconazole is a moderate CYP3A4 inhibitor). Apixaban is an active drug, not a prodrug, so reduced clearance raises AUC/Cmax and bleeding risk.
- Direction: Increased apixaban effect (bleeding risk).
- Evidence: Theoretical; magnitude not quantified.
- Onset: Unspecified; inhibition may persist 4 to 5 days after fluconazole discontinuation given its long half-life.
- Management: Use caution. Monitor for signs of bleeding; dose may need individualization by the care team. Consider alternative antifungal where appropriate.
What happens
Increased apixaban exposure and an increased risk for toxicity
Interaction Deep Dive
Exercise caution when apixaban is combined with a moderate CYP3A4 inhibitor like fluconazole. The CYP3A4 inhibition caused by fluconazole can continue for 4 to 5 days following its discontinuation1.
Why it happens (mechanism)
Inhibition of CYP3A4-mediated metabolism of apixaban
How to manage this interaction
This combination is used, but it calls for some extra care. Here is what typically happens and what you can do:
- Keep taking both as prescribed unless your prescriber tells you otherwise.
- Your care team may monitor you more closely for bleeding, and your apixaban dose may need to be adjusted and individualized by your team.
- Watch for unusual bruising, nosebleeds, blood in urine or stool, or bleeding that won't stop, and report these right away.
- Remember fluconazole's effect can linger 4 to 5 days after you stop it, so keep watching during that window.
Ask your pharmacist or doctor before starting or stopping either medicine.
Management is individual — confirm any change with your pharmacist or prescriber.
Common questions
Can I take Fluconazole and Apixaban together?
Fluconazole can raise apixaban levels and bleeding risk, so watch for unusual bleeding and let your care team monitor and adjust as needed, including for several days after fluconazole stops. Always confirm with your pharmacist or prescriber before making any change.
How serious is the Fluconazole and Apixaban 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 Fluconazole and Apixaban interaction managed?
This combination is used, but it calls for some extra care. Here is what typically happens and what you can do: Keep taking both as prescribed unless your prescriber tells you otherwise. Your care team may monitor you more closely for bleeding, and your apixaban dose may need to be adjusted and individualized by your team. Watch for unusual bruising, nosebleeds, blood in urine or stool, or bleedin… 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 Fluconazole or Apixaban 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: DIFLUCAN(R) oral tablets, suspension, fluconazole oral tablets, suspension. Roerig (per FDA), New York, NY, 2024. DailyMed
Keep reading about Fluconazole
Keep reading about Apixaban
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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