Drug interactions
Amitriptyline + Bedaquiline
Severity: Major
Amitriptyline and Bedaquiline: 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 QT interval, so using them together raises the chance of clinically significant QTc prolongation and torsades de pointes. The risk is greater with electrolyte disturbances, cardiac disease or other QT-prolonging drugs.
What this interaction means in plain words
Amitriptyline and Bedaquiline 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.
Amitriptyline belongs to Central Nervous System; Bedaquiline belongs to Anti Bacterial.
Why it happens
Additive pharmacodynamic prolongation of cardiac repolarization through blockade of cardiac potassium channels.
What to do
Obtain a baseline ECG and repeat it periodically during co-treatment, and correct potassium, magnesium and calcium abnormalities. Stop or replace amitriptyline if QTc becomes markedly 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 Amitriptyline
- Amitriptyline + Isocarboxazid Contraindicated
- Amitriptyline + Methylene blue Contraindicated
- Amitriptyline + Phenelzine Contraindicated
- Amitriptyline + Pimozide Contraindicated
- Amitriptyline + Procarbazine Contraindicated
- Amitriptyline + Safinamide Contraindicated
Other interactions of Bedaquiline
- Bedaquiline + Ziprasidone Contraindicated
- Alfuzosin + Bedaquiline Major
- Amiodarone + Bedaquiline Major
- Amisulpride + Bedaquiline Major
- Amobarbital + Bedaquiline Major
- Anagrelide + Bedaquiline Major
Frequently asked questions
Can I take Amitriptyline with Bedaquiline?
MediHelp rates the interaction as major. Amitriptyline and Bedaquiline 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 QT interval, so using them together raises the chance of clinically significant QTc prolongation and torsades de pointes. The risk is greater with electrolyte disturbances, cardiac disease or other QT-prolonging drugs.
How serious is the interaction between Amitriptyline and Bedaquiline?
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 repeat it periodically during co-treatment, and correct potassium, magnesium and calcium abnormalities. Stop or replace amitriptyline if QTc becomes markedly prolonged.
What other medicines interact with Amitriptyline?
MediHelp also lists interactions of Amitriptyline with, for example, Isocarboxazid, Methylene blue, Phenelzine. The full list is on the Amitriptyline page.
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