Drug interactions
Encorafenib + Erlotinib
Severity: Moderate
Encorafenib and Erlotinib: 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
Encorafenib both inhibits and induces CYP3A4, so erlotinib exposure may rise or fall unpredictably. This could lead to toxicity or reduced efficacy.
What this interaction means in plain words
Encorafenib and Erlotinib 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.
Encorafenib belongs to Oncology; Erlotinib belongs to Oncology.
Why it happens
Mixed CYP3A4 inhibition and induction by encorafenib alters erlotinib metabolism.
What to do
Monitor for both erlotinib toxicity and loss of response. Adjust the erlotinib dose according to tolerability.
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 Erlotinib
- Amobarbital + Erlotinib Major
- Apalutamide + Erlotinib Major
- Carbamazepine + Erlotinib Major
- Cobicistat + Erlotinib Major
- Darunavir + Erlotinib Major
- Dexlansoprazole + Erlotinib Major
Other interactions of Encorafenib
Frequently asked questions
Can I take Encorafenib with Erlotinib?
MediHelp rates the interaction as moderate. Encorafenib and Erlotinib 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. Encorafenib both inhibits and induces CYP3A4, so erlotinib exposure may rise or fall unpredictably. This could lead to toxicity or reduced efficacy.
How serious is the interaction between Encorafenib and Erlotinib?
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 for both erlotinib toxicity and loss of response. Adjust the erlotinib dose according to tolerability.
What other medicines interact with Erlotinib?
MediHelp also lists interactions of Erlotinib with, for example, Amobarbital, Apalutamide, Carbamazepine. The full list is on the Erlotinib page.
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