Drug interactions
Bosutinib + Chlorpromazine
Severity: Major
Bosutinib and Chlorpromazine: 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 their combination may increase the risk of torsades de pointes. The risk is higher with electrolyte disturbances, bradycardia, or structural heart disease.
What this interaction means in plain words
Bosutinib and Chlorpromazine 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.
Bosutinib belongs to Oncology; Chlorpromazine belongs to Central Nervous System.
Why it happens
Additive QT prolongation through cardiac repolarization effects.
What to do
Obtain a baseline ECG and monitor it periodically, and correct potassium and magnesium abnormalities. Consider an alternative to one agent if the QT interval 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 Chlorpromazine
- Chlorpromazine + Dofetilide Contraindicated
- Chlorpromazine + Dronedarone Contraindicated
- Chlorpromazine + Droperidol Contraindicated
- Chlorpromazine + Ibutilide Contraindicated
- Chlorpromazine + Metrizamide Contraindicated
- Chlorpromazine + Panobinostat Contraindicated
Other interactions of Bosutinib
- Amiodarone + Bosutinib Major
- Apalutamide + Bosutinib Major
- Aprepitant + Bosutinib Major
- Bosentan + Bosutinib Major
- Bosutinib + Carbamazepine Major
- Bosutinib + Cisapride Major
Frequently asked questions
Can I take Bosutinib with Chlorpromazine?
MediHelp rates the interaction as major. Bosutinib and Chlorpromazine 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 their combination may increase the risk of torsades de pointes. The risk is higher with electrolyte disturbances, bradycardia, or structural heart disease.
How serious is the interaction between Bosutinib and Chlorpromazine?
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 monitor it periodically, and correct potassium and magnesium abnormalities. Consider an alternative to one agent if the QT interval becomes markedly prolonged.
What other medicines interact with Chlorpromazine?
MediHelp also lists interactions of Chlorpromazine with, for example, Dofetilide, Dronedarone, Droperidol. The full list is on the Chlorpromazine page.
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