Drug interactions
Inotuzumab + Olanzapine
Severity: Moderate
Inotuzumab and Olanzapine: 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 can prolong the QT interval, so combined use may raise the risk of torsade de pointes. Inotuzumab labeling advises caution with other QT-prolonging drugs.
What this interaction means in plain words
Inotuzumab and Olanzapine 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.
Why it happens
Additive prolongation of cardiac repolarization (QT interval).
What to do
Obtain a baseline ECG and repeat it during treatment, and correct potassium and magnesium. Consider an alternative antipsychotic with less QT effect if the QTc rises markedly.
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
Frequently asked questions
Can I take Inotuzumab with Olanzapine?
MediHelp rates the interaction as moderate. Inotuzumab and Olanzapine 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 can prolong the QT interval, so combined use may raise the risk of torsade de pointes. Inotuzumab labeling advises caution with other QT-prolonging drugs.
How serious is the interaction between Inotuzumab and Olanzapine?
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 repeat it during treatment, and correct potassium and magnesium. Consider an alternative antipsychotic with less QT effect if the QTc rises markedly.
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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