Drug interactions
Imatinib + Pacritinib
Severity: Major
Imatinib and Pacritinib: 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 pacritinib exposure, raising risks of QT prolongation, bleeding and diarrhea.
What this interaction means in plain words
Imatinib and Pacritinib 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; Pacritinib belongs to Oncology.
Why it happens
Imatinib inhibits CYP3A4, the main route of pacritinib metabolism.
What to do
Avoid if possible. If used together, monitor ECG, platelet counts and bleeding signs, and consider reducing the pacritinib dose.
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 Pacritinib
- Clarithromycin + Pacritinib Contraindicated
- Ketoconazole + Pacritinib Contraindicated
- Pacritinib + Posaconazole Contraindicated
- Pacritinib + Voriconazole Contraindicated
- Amiodarone + Pacritinib Major
- Carbamazepine + Pacritinib Major
Frequently asked questions
Can I take Imatinib with Pacritinib?
MediHelp rates the interaction as major. Imatinib and Pacritinib 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 pacritinib exposure, raising risks of QT prolongation, bleeding and diarrhea.
How serious is the interaction between Imatinib and Pacritinib?
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 used together, monitor ECG, platelet counts and bleeding signs, and consider reducing the pacritinib dose.
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.
Full monographs, dosing and an interaction checker in the MediHelp app
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