Drug interactions
Ibrutinib + Itraconazole
Severity: Major
Ibrutinib and Itraconazole: 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
Itraconazole greatly increases ibrutinib exposure, raising the risk of bleeding, arrhythmias, infections and cytopenias.
What this interaction means in plain words
Ibrutinib and Itraconazole 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.
Ibrutinib belongs to Oncology; Itraconazole belongs to Anti Fungals.
Why it happens
Inhibition of CYP3A4-mediated ibrutinib metabolism.
What to do
Avoid if possible. If a short course is needed, interrupt ibrutinib, or reduce its dose per labeling and monitor for toxicity.
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 Itraconazole
- Alfuzosin + Itraconazole Contraindicated
- Alprazolam + Itraconazole Contraindicated
- Avanafil + Itraconazole Contraindicated
- Conivaptan + Itraconazole Contraindicated
- Dihydroergotamine intranasal + Itraconazole Contraindicated
- Dihydroergotamine + Itraconazole Contraindicated
Other interactions of Ibrutinib
- Abciximab + Ibrutinib Major
- Acetylsalicylic acid + Ibrutinib Major
- Alteplase + Ibrutinib Major
- Amobarbital + Ibrutinib Major
- Apalutamide + Ibrutinib Major
- Apixaban + Ibrutinib Major
Frequently asked questions
Can I take Ibrutinib with Itraconazole?
MediHelp rates the interaction as major. Ibrutinib and Itraconazole 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. Itraconazole greatly increases ibrutinib exposure, raising the risk of bleeding, arrhythmias, infections and cytopenias.
How serious is the interaction between Ibrutinib and Itraconazole?
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 if possible. If a short course is needed, interrupt ibrutinib, or reduce its dose per labeling and monitor for toxicity.
What other medicines interact with Itraconazole?
MediHelp also lists interactions of Itraconazole with, for example, Alfuzosin, Alprazolam, Avanafil. The full list is on the Itraconazole page.
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