Drug interactions
Inotuzumab + Mirtazapine
Severity: Major
Inotuzumab and Mirtazapine: 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
Inotuzumab ozogamicin is associated with QT prolongation, and mirtazapine can add to this effect. The combination raises the risk of ventricular arrhythmia.
What this interaction means in plain words
Inotuzumab and Mirtazapine 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.
Why it happens
Additive prolongation of cardiac repolarization.
What to do
Obtain ECG and electrolytes at baseline and periodically during treatment. Correct electrolyte abnormalities and consider an alternative antidepressant if QTc lengthens.
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 Mirtazapine
- Isocarboxazid + Mirtazapine Contraindicated
- Mirtazapine + Phenelzine Contraindicated
- Mirtazapine + Pimozide Contraindicated
- Mirtazapine + Procarbazine Contraindicated
- Mirtazapine + Rasagiline Contraindicated
- Mirtazapine + Selegiline Contraindicated
Frequently asked questions
Can I take Inotuzumab with Mirtazapine?
MediHelp rates the interaction as major. Inotuzumab and Mirtazapine 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. Inotuzumab ozogamicin is associated with QT prolongation, and mirtazapine can add to this effect. The combination raises the risk of ventricular arrhythmia.
How serious is the interaction between Inotuzumab and Mirtazapine?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Obtain ECG and electrolytes at baseline and periodically during treatment. Correct electrolyte abnormalities and consider an alternative antidepressant if QTc lengthens.
What other medicines interact with Mirtazapine?
MediHelp also lists interactions of Mirtazapine with, for example, Isocarboxazid, Phenelzine, Pimozide. The full list is on the Mirtazapine page.
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