Drug interactions
Givinostat + Thioridazine
Severity: Major
Givinostat 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
Givinostat can prolong the QT interval, and thioridazine has a strong QT-prolonging effect. Combining them increases the risk of torsades de pointes.
What this interaction means in plain words
Givinostat 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.
Givinostat belongs to Miscellaneous; Thioridazine belongs to Central Nervous System.
Why it happens
Additive prolongation of ventricular repolarization (QT) from both drugs.
What to do
Avoid if possible and choose an antipsychotic with lower QT risk. If coadministered, obtain ECGs at initiation and periodically, correct potassium and magnesium, and withhold 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 Thioridazine
- Abiraterone + Thioridazine Contraindicated
- Adagrasib + Thioridazine Contraindicated
- Amiodarone + Thioridazine Contraindicated
- Amisulpride + Thioridazine Contraindicated
- Amitriptyline + Thioridazine Contraindicated
- Amoxapine + Thioridazine Contraindicated
Other interactions of Givinostat
- Abiraterone + Givinostat Major
- Amiodarone + Givinostat Major
- Amisulpride + Givinostat Major
- Amitriptyline + Givinostat Major
- Anagrelide + Givinostat Major
- Asenapine + Givinostat Major
Frequently asked questions
Can I take Givinostat with Thioridazine?
MediHelp rates the interaction as major. Givinostat 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. Givinostat can prolong the QT interval, and thioridazine has a strong QT-prolonging effect. Combining them increases the risk of torsades de pointes.
How serious is the interaction between Givinostat 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 lower QT risk. If coadministered, obtain ECGs at initiation and periodically, correct potassium and magnesium, and withhold if QTc becomes markedly prolonged.
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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