Drug interactions
Netupitant-palonosetron + Rifabutin
Severity: Major
Netupitant-palonosetron and Rifabutin: 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
Netupitant is cleared mainly by CYP3A4, and rifabutin induces this enzyme. Concurrent use can reduce netupitant exposure and weaken its prevention of chemotherapy-induced nausea and vomiting. Rifabutin is a weaker inducer than rifampicin, but the effect may still be clinically relevant.
What this interaction means in plain words
Netupitant-palonosetron and Rifabutin 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.
Netupitant-palonosetron belongs to Gastrointestinal Tract; Rifabutin belongs to Anti Bacterial.
Why it happens
Rifabutin induces CYP3A4, increasing the metabolism of netupitant and lowering its plasma concentrations.
What to do
Avoid long-term rifabutin use with netupitant-palonosetron where possible and choose an antiemetic regimen not dependent on CYP3A4. If it cannot be avoided, monitor for breakthrough nausea and vomiting and add rescue antiemetics.
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?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Netupitant-palonosetron and Rifabutin, the additional notes, the evidence detail and the whole-prescription interaction checker.
- Full clinical management advice
- Additional notes
- Evidence detail
- Interaction checker for a whole prescription
Try Pro+ free for 14 days on the web. No card needed.
Other interactions of Netupitant-palonosetron
- Apomorphine + Netupitant-palonosetron Contraindicated
- Flibanserin + Netupitant-palonosetron Contraindicated
- Apalutamide + Netupitant-palonosetron Major
- Avapritinib + Netupitant-palonosetron Major
- Carbamazepine + Netupitant-palonosetron Major
- Cobimetinib + Netupitant-palonosetron Major
Other interactions of Rifabutin
- Cabotegravir + Rifabutin Contraindicated
- Lorlatinib + Rifabutin Contraindicated
- Rifabutin + Voriconazole Contraindicated
- Apixaban + Rifabutin Major
- Axitinib + Rifabutin Major
- Brexpiprazole + Rifabutin Major
Frequently asked questions
Can I take Netupitant-palonosetron with Rifabutin?
MediHelp rates the interaction as major. Netupitant-palonosetron and Rifabutin 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. Netupitant is cleared mainly by CYP3A4, and rifabutin induces this enzyme. Concurrent use can reduce netupitant exposure and weaken its prevention of chemotherapy-induced nausea and vomiting. Rifabutin is a weaker inducer than rifampicin, but the effect may still be clinically relevant.
How serious is the interaction between Netupitant-palonosetron and Rifabutin?
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 long-term rifabutin use with netupitant-palonosetron where possible and choose an antiemetic regimen not dependent on CYP3A4. If it cannot be avoided, monitor for breakthrough nausea and vomiting and add rescue antiemetics.
What other medicines interact with Netupitant-palonosetron?
MediHelp also lists interactions of Netupitant-palonosetron with, for example, Apomorphine, Flibanserin, Apalutamide. The full list is on the Netupitant-palonosetron page.
Full monographs, dosing and an interaction checker in the MediHelp app
Open the complete reference, check multi-drug interactions and use dosing tools in the MediHelp app.
