Drug interactions
Imatinib + Neratinib
Severity: Major
Imatinib and Neratinib: 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
Imatinib may increase neratinib exposure, raising the risk of severe diarrhea and hepatotoxicity. Neratinib labeling advises avoiding moderate and strong CYP3A4 inhibitors.
What this interaction means in plain words
Imatinib and Neratinib 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.
Imatinib belongs to Oncology; Neratinib belongs to Oncology.
Why it happens
Imatinib inhibits CYP3A4, which metabolizes neratinib.
What to do
Avoid the combination if possible. If used, monitor for diarrhea with antidiarrheal prophylaxis and check liver tests.
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 Imatinib
- Imatinib + Lomitapide Contraindicated
- Imatinib + Lonafarnib Contraindicated
- Amobarbital + Imatinib Major
- Apalutamide + Imatinib Major
- Avapritinib + Imatinib Major
- Benzhydrocodone / acetaminophen + Imatinib Major
Other interactions of Neratinib
- Amiodarone + Neratinib Major
- Amobarbital + Neratinib Major
- Aprepitant + Neratinib Major
- Armodafinil + Neratinib Major
- Bosentan + Neratinib Major
- Carbamazepine + Neratinib Major
Frequently asked questions
Can I take Imatinib with Neratinib?
MediHelp rates the interaction as major. Imatinib and Neratinib 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. Imatinib may increase neratinib exposure, raising the risk of severe diarrhea and hepatotoxicity. Neratinib labeling advises avoiding moderate and strong CYP3A4 inhibitors.
How serious is the interaction between Imatinib and Neratinib?
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 the combination if possible. If used, monitor for diarrhea with antidiarrheal prophylaxis and check liver tests.
What other medicines interact with Imatinib?
MediHelp also lists interactions of Imatinib with, for example, Lomitapide, Lonafarnib, Amobarbital. The full list is on the Imatinib page.
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