Drug interactions
Olanzapine + Sorafenib
Severity: Moderate
Olanzapine and Sorafenib: 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
Both drugs have been associated with QTc prolongation, so combined use may add to the risk of ventricular arrhythmia including torsades de pointes. The risk with olanzapine alone is low but rises with other risk factors.
What this interaction means in plain words
Olanzapine and Sorafenib 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; Sorafenib belongs to Oncology.
Why it happens
Additive pharmacodynamic QT prolongation through cardiac repolarization effects.
What to do
Obtain a baseline ECG and monitor QTc periodically, and correct potassium and magnesium abnormalities. Avoid further QT-prolonging drugs if QTc lengthens.
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 Sorafenib
Frequently asked questions
Can I take Olanzapine with Sorafenib?
MediHelp rates the interaction as moderate. Olanzapine and Sorafenib 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. Both drugs have been associated with QTc prolongation, so combined use may add to the risk of ventricular arrhythmia including torsades de pointes. The risk with olanzapine alone is low but rises with other risk factors.
How serious is the interaction between Olanzapine and Sorafenib?
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 a baseline ECG and monitor QTc periodically, and correct potassium and magnesium abnormalities. Avoid further QT-prolonging drugs if QTc lengthens.
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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