Drug interactions
Dexamethasone + Venetoclax
Severity: Moderate
Dexamethasone and Venetoclax: 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 can reduce venetoclax exposure through CYP3A induction, possibly compromising anti-leukemic activity. It is often used together in myeloma and lymphoid regimens, where the effect is generally manageable.
What this interaction means in plain words
Dexamethasone and Venetoclax 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; Venetoclax belongs to Miscellaneous.
Why it happens
Dexamethasone induces CYP3A4, increasing the metabolism of venetoclax, which is a CYP3A substrate.
What to do
Monitor treatment response and consider alternatives to prolonged high-dose dexamethasone where possible. Avoid adding strong CYP3A inducers.
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 Venetoclax
- Clarithromycin + Venetoclax Contraindicated
- Itraconazole + Venetoclax Contraindicated
- Ketoconazole + Venetoclax Contraindicated
- Posaconazole + Venetoclax Contraindicated
- Venetoclax + Voriconazole Contraindicated
- Amiodarone + Venetoclax Major
Frequently asked questions
Can I take Dexamethasone with Venetoclax?
MediHelp rates the interaction as moderate. Dexamethasone and Venetoclax 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 can reduce venetoclax exposure through CYP3A induction, possibly compromising anti-leukemic activity. It is often used together in myeloma and lymphoid regimens, where the effect is generally manageable.
How serious is the interaction between Dexamethasone and Venetoclax?
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 treatment response and consider alternatives to prolonged high-dose dexamethasone where possible. Avoid adding strong CYP3A inducers.
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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