Drug interactions
Sorafenib + Thioridazine
Severity: Major
Sorafenib 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
Sorafenib can prolong the QT interval and thioridazine causes marked QTc prolongation. Together they raise the risk of torsades de pointes. Electrolyte disturbances such as diarrhea-related hypokalemia may add to the risk.
What this interaction means in plain words
Sorafenib 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.
Sorafenib belongs to Oncology; Thioridazine belongs to Central Nervous System.
Why it happens
Additive prolongation of cardiac repolarization.
What to do
Avoid if possible and choose an antipsychotic with less QT effect. If used together, monitor ECG and electrolytes regularly.
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 Sorafenib
Frequently asked questions
Can I take Sorafenib with Thioridazine?
MediHelp rates the interaction as major. Sorafenib 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. Sorafenib can prolong the QT interval and thioridazine causes marked QTc prolongation. Together they raise the risk of torsades de pointes. Electrolyte disturbances such as diarrhea-related hypokalemia may add to the risk.
How serious is the interaction between Sorafenib 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 if possible and choose an antipsychotic with less QT effect. If used together, monitor ECG and electrolytes regularly.
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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