Drug interactions
Encorafenib + Methadone
Severity: Moderate
Encorafenib and Methadone: 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
Both agents can prolong the QT interval, so combined use may raise the risk of torsades de pointes. Encorafenib is also a CYP3A4 substrate and inducer with possible effects on methadone exposure.
What this interaction means in plain words
Encorafenib and Methadone 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; Methadone belongs to Musculoskeletal.
Why it happens
Additive QT prolongation; encorafenib may also alter CYP3A4-mediated methadone metabolism.
What to do
Obtain a baseline ECG and monitor QTc and electrolytes periodically. Watch for loss of methadone effect or withdrawal if induction occurs.
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 Methadone
- Alvimopan + Methadone Contraindicated
- Calcium / magnesium / potassium / sodium oxybates + Methadone Contraindicated
- Droperidol + Methadone Contraindicated
- Ibutilide + Methadone Contraindicated
- Isocarboxazid + Methadone Contraindicated
- Lefamulin + Methadone Contraindicated
Other interactions of Encorafenib
Frequently asked questions
Can I take Encorafenib with Methadone?
MediHelp rates the interaction as moderate. Encorafenib and Methadone 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. Both agents can prolong the QT interval, so combined use may raise the risk of torsades de pointes. Encorafenib is also a CYP3A4 substrate and inducer with possible effects on methadone exposure.
How serious is the interaction between Encorafenib and Methadone?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Obtain a baseline ECG and monitor QTc and electrolytes periodically. Watch for loss of methadone effect or withdrawal if induction occurs.
What other medicines interact with Methadone?
MediHelp also lists interactions of Methadone with, for example, Alvimopan, Calcium / magnesium / potassium / sodium oxybates, Droperidol. The full list is on the Methadone page.
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