Drug interactions
Ivosidenib + Pimozide
Severity: Major
Ivosidenib and Pimozide: major interaction.
Last updated Sources: EMA SmPC
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
Ivosidenib prolongs the QT interval and induces CYP3A4, which may lower pimozide levels. The additive arrhythmia risk and unpredictable pimozide exposure make the combination undesirable.
What this interaction means in plain words
Ivosidenib and Pimozide 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.
Ivosidenib belongs to Oncology; Pimozide belongs to Central Nervous System.
Why it happens
Additive QTc prolongation plus CYP3A4 induction by ivosidenib.
What to do
Avoid the combination where possible. If it is necessary, monitor ECG and electrolytes and watch pimozide efficacy.
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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References
Other interactions of Pimozide
- Adagrasib + Pimozide Contraindicated
- Amiodarone + Pimozide Contraindicated
- Amisulpride + Pimozide Contraindicated
- Amitriptyline + Pimozide Contraindicated
- Amoxapine + Pimozide Contraindicated
- Anagrelide + Pimozide Contraindicated
Other interactions of Ivosidenib
- Alfuzosin + Ivosidenib Major
- Amiodarone + Ivosidenib Major
- Amisulpride + Ivosidenib Major
- Amitriptyline + Ivosidenib Major
- Amobarbital + Ivosidenib Major
- Anagrelide + Ivosidenib Major
Frequently asked questions
Can I take Ivosidenib with Pimozide?
MediHelp rates the interaction as major. Ivosidenib and Pimozide 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. Ivosidenib prolongs the QT interval and induces CYP3A4, which may lower pimozide levels. The additive arrhythmia risk and unpredictable pimozide exposure make the combination undesirable.
How serious is the interaction between Ivosidenib and Pimozide?
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 where possible. If it is necessary, monitor ECG and electrolytes and watch pimozide efficacy.
What other medicines interact with Pimozide?
MediHelp also lists interactions of Pimozide with, for example, Adagrasib, Amiodarone, Amisulpride. The full list is on the Pimozide page.
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