Drug interactions
Olanzapine + Ponesimod
Severity: Moderate
Olanzapine and Ponesimod: moderate 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
Ponesimod lowers heart rate and slows atrioventricular conduction at initiation, and olanzapine has a small QT effect. The combination may raise arrhythmia risk, particularly if QT prolongation develops with bradycardia.
What this interaction means in plain words
Olanzapine and Ponesimod can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Olanzapine belongs to Central Nervous System; Ponesimod belongs to Central Nervous System.
Why it happens
Additive effects on cardiac conduction, with S1P receptor-mediated bradycardia plus QT prolongation.
What to do
Obtain ECG before starting ponesimod and seek cardiology advice if on QT-prolonging drugs. Monitor heart rate after initiation.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
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Other interactions of Olanzapine
Other interactions of Ponesimod
- Fingolimod + Ponesimod Contraindicated
- Ponesimod + Siponimod Contraindicated
- Amiodarone + Ponesimod Major
- Amisulpride + Ponesimod Major
- Anagrelide + Ponesimod Major
- Anti-thymocyte + Ponesimod Major
Frequently asked questions
Can I take Olanzapine with Ponesimod?
MediHelp rates the interaction as moderate. Olanzapine and Ponesimod can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Ponesimod lowers heart rate and slows atrioventricular conduction at initiation, and olanzapine has a small QT effect. The combination may raise arrhythmia risk, particularly if QT prolongation develops with bradycardia.
How serious is the interaction between Olanzapine and Ponesimod?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Obtain ECG before starting ponesimod and seek cardiology advice if on QT-prolonging drugs. Monitor heart rate after initiation.
What other medicines interact with Olanzapine?
MediHelp also lists interactions of Olanzapine with, for example, Amisulpride, Amoxapine, Apomorphine. The full list is on the Olanzapine page.
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