Drug interactions
Dexamethasone + Irinotecan liposomal
Severity: Moderate
Dexamethasone and Irinotecan liposomal: 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 may lower exposure to irinotecan and its active metabolite SN-38, potentially reducing efficacy. Strong CYP3A4 inducers are a known concern with irinotecan, and dexamethasone is a weaker inducer.
What this interaction means in plain words
Dexamethasone and Irinotecan liposomal 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.
Why it happens
CYP3A4 induction diverts irinotecan to inactive oxidative metabolites, lowering SN-38 formation.
What to do
Dexamethasone is commonly used as antiemetic premedication and is generally acceptable; monitor treatment response and avoid prolonged high-dose use beyond antiemetic needs.
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
Frequently asked questions
Can I take Dexamethasone with Irinotecan liposomal?
MediHelp rates the interaction as moderate. Dexamethasone and Irinotecan liposomal 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 may lower exposure to irinotecan and its active metabolite SN-38, potentially reducing efficacy. Strong CYP3A4 inducers are a known concern with irinotecan, and dexamethasone is a weaker inducer.
How serious is the interaction between Dexamethasone and Irinotecan liposomal?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Dexamethasone is commonly used as antiemetic premedication and is generally acceptable; monitor treatment response and avoid prolonged high-dose use beyond antiemetic needs.
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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