Drug interactions
Methadone + Triclabendazole
Severity: Major
Methadone and Triclabendazole: major 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 drugs can prolong the QTc interval, so combined use may raise the risk of torsades de pointes. The risk is greater with higher methadone doses, electrolyte disturbances or heart disease.
What this interaction means in plain words
Methadone and Triclabendazole can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Methadone belongs to Musculoskeletal; Triclabendazole belongs to Anti Parasitic.
Why it happens
Additive QT prolongation through cardiac potassium channel (hERG) blockade.
What to do
Obtain a baseline ECG and correct potassium and magnesium before use. Monitor the QTc and consider an alternative if it becomes prolonged.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
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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 Triclabendazole
Frequently asked questions
Can I take Methadone with Triclabendazole?
MediHelp rates the interaction as major. Methadone and Triclabendazole can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Both drugs can prolong the QTc interval, so combined use may raise the risk of torsades de pointes. The risk is greater with higher methadone doses, electrolyte disturbances or heart disease.
How serious is the interaction between Methadone and Triclabendazole?
MediHelp rates it major, 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 correct potassium and magnesium before use. Monitor the QTc and consider an alternative if it becomes prolonged.
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.
Full monographs, dosing and an interaction checker in the MediHelp app
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