Drug interactions
Rifampicin + Zanubrutinib
Severity: Major
Rifampicin and Zanubrutinib: 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
Rifampicin greatly lowers zanubrutinib exposure, risking reduced efficacy in B-cell malignancies.
What this interaction means in plain words
Rifampicin and Zanubrutinib 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.
Rifampicin belongs to Anti Bacterial; Zanubrutinib belongs to Oncology.
Why it happens
Strong CYP3A4 induction by rifampicin accelerates zanubrutinib metabolism.
What to do
Avoid concurrent use and select an alternative antimycobacterial or BTK inhibitor strategy.
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 Zanubrutinib
Other interactions of Rifampicin
- Cabotegravir + Rifampicin Contraindicated
- Delamanid + Rifampicin Contraindicated
- Doravirine + Rifampicin Contraindicated
- Ensitrelvir + Rifampicin Contraindicated
- Fostemsavir + Rifampicin Contraindicated
- Isavuconazole + Rifampicin Contraindicated
Frequently asked questions
Can I take Rifampicin with Zanubrutinib?
MediHelp rates the interaction as major. Rifampicin and Zanubrutinib 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. Rifampicin greatly lowers zanubrutinib exposure, risking reduced efficacy in B-cell malignancies.
How serious is the interaction between Rifampicin and Zanubrutinib?
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 concurrent use and select an alternative antimycobacterial or BTK inhibitor strategy.
What other medicines interact with Zanubrutinib?
MediHelp also lists interactions of Zanubrutinib with, for example, Alteplase, Amobarbital, Apalutamide. The full list is on the Zanubrutinib page.
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