Drug interactions
Berotralstat + Thioridazine
Severity: Major
Berotralstat and Thioridazine: 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
Berotralstat inhibits CYP2D6 and may raise thioridazine concentrations. Because thioridazine is a narrow-therapeutic-index drug that prolongs QT, higher levels can raise the risk of serious arrhythmia.
What this interaction means in plain words
Berotralstat and Thioridazine 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.
Berotralstat belongs to Miscellaneous; Thioridazine belongs to Central Nervous System.
Why it happens
Inhibition of CYP2D6-mediated metabolism of thioridazine.
What to do
Avoid the combination if possible; otherwise reduce thioridazine dose and monitor ECG and QTc.
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 Thioridazine
- Abiraterone + Thioridazine Contraindicated
- Adagrasib + Thioridazine Contraindicated
- Amiodarone + Thioridazine Contraindicated
- Amisulpride + Thioridazine Contraindicated
- Amitriptyline + Thioridazine Contraindicated
- Amoxapine + Thioridazine Contraindicated
Other interactions of Berotralstat
- Berotralstat + Ergotamine Major
- Berotralstat + Nilotinib Major
- Berotralstat + Pimozide Major
- Berotralstat + Quinidine Major
- Berotralstat + Quinine Major
- Berotralstat + Tacrolimus Major
Frequently asked questions
Can I take Berotralstat with Thioridazine?
MediHelp rates the interaction as major. Berotralstat and Thioridazine 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. Berotralstat inhibits CYP2D6 and may raise thioridazine concentrations. Because thioridazine is a narrow-therapeutic-index drug that prolongs QT, higher levels can raise the risk of serious arrhythmia.
How serious is the interaction between Berotralstat and Thioridazine?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid the combination if possible; otherwise reduce thioridazine dose and monitor ECG and QTc.
What other medicines interact with Thioridazine?
MediHelp also lists interactions of Thioridazine with, for example, Abiraterone, Adagrasib, Amiodarone. The full list is on the Thioridazine page.
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