Drug interactions
Dexamethasone + Imatinib
Severity: Moderate
Dexamethasone and Imatinib: moderate 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
Dexamethasone induces CYP3A4, which is the main pathway of imatinib metabolism, and may lower imatinib exposure. Reduced exposure could weaken the antileukemic or antitumor response, especially with prolonged steroid use.
What this interaction means in plain words
Dexamethasone and Imatinib can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Dexamethasone belongs to Endocrine; Imatinib belongs to Oncology.
Why it happens
Dexamethasone induces CYP3A4, increasing imatinib clearance.
What to do
Monitor response to imatinib, and consider checking imatinib trough levels where available if steroids are prolonged. Increase the imatinib dose if response is inadequate and clinically appropriate.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
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Other interactions of Dexamethasone
- Bcg vaccine live + Dexamethasone Contraindicated
- Dexamethasone + Mifepristone Contraindicated
- Dexamethasone + Rilpivirine Contraindicated
- Dexamethasone + Smallpox vaccine live Contraindicated
- Dexamethasone + Varicella virus vaccine live Contraindicated
- Dexamethasone + Yellow fever vaccine Contraindicated
Other interactions of Imatinib
- Imatinib + Lomitapide Contraindicated
- Imatinib + Lonafarnib Contraindicated
- Amobarbital + Imatinib Major
- Apalutamide + Imatinib Major
- Avapritinib + Imatinib Major
- Benzhydrocodone / acetaminophen + Imatinib Major
Frequently asked questions
Can I take Dexamethasone with Imatinib?
MediHelp rates the interaction as moderate. Dexamethasone and Imatinib can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Dexamethasone induces CYP3A4, which is the main pathway of imatinib metabolism, and may lower imatinib exposure. Reduced exposure could weaken the antileukemic or antitumor response, especially with prolonged steroid use.
How serious is the interaction between Dexamethasone and Imatinib?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor response to imatinib, and consider checking imatinib trough levels where available if steroids are prolonged. Increase the imatinib dose if response is inadequate and clinically appropriate.
What other medicines interact with Dexamethasone?
MediHelp also lists interactions of Dexamethasone with, for example, Bcg vaccine live, Mifepristone, Rilpivirine. The full list is on the Dexamethasone page.
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