Drug interactions
Dexamethasone + Erlotinib
Severity: Minor
Dexamethasone and Erlotinib: minor 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 induce CYP3A4 and lower erlotinib exposure, though the effect is usually modest. Reduced exposure could diminish antitumor efficacy.
What this interaction means in plain words
Dexamethasone and Erlotinib have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Dexamethasone belongs to Endocrine; Erlotinib belongs to Oncology.
Why it happens
Weak CYP3A4 induction by dexamethasone increases erlotinib metabolism.
What to do
No routine dose change; monitor tumor response and tolerability during prolonged dexamethasone use.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
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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 Erlotinib
- Amobarbital + Erlotinib Major
- Apalutamide + Erlotinib Major
- Carbamazepine + Erlotinib Major
- Cobicistat + Erlotinib Major
- Darunavir + Erlotinib Major
- Dexlansoprazole + Erlotinib Major
Frequently asked questions
Can I take Dexamethasone with Erlotinib?
MediHelp rates the interaction as minor. Dexamethasone and Erlotinib have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Dexamethasone may induce CYP3A4 and lower erlotinib exposure, though the effect is usually modest. Reduced exposure could diminish antitumor efficacy.
How serious is the interaction between Dexamethasone and Erlotinib?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: No routine dose change; monitor tumor response and tolerability during prolonged dexamethasone use.
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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