Drug interactions
Gemtuzumab + Ziprasidone
Severity: Major
Gemtuzumab and Ziprasidone: 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
Gemtuzumab ozogamicin has been associated with QT prolongation, and ziprasidone also prolongs QT. Combined use raises the risk of ventricular arrhythmias including torsades de pointes, especially with electrolyte disturbances from chemotherapy.
What this interaction means in plain words
Gemtuzumab and Ziprasidone 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 QT interval prolongation.
What to do
Avoid if an alternative antipsychotic is available; otherwise monitor ECG and correct potassium and magnesium before and during therapy.
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 Ziprasidone
- Amiodarone + Ziprasidone Contraindicated
- Amitriptyline + Ziprasidone Contraindicated
- Arsenic trioxide + Ziprasidone Contraindicated
- Bedaquiline + Ziprasidone Contraindicated
- Chloroquine + Ziprasidone Contraindicated
- Citalopram + Ziprasidone Contraindicated
Frequently asked questions
Can I take Gemtuzumab with Ziprasidone?
MediHelp rates the interaction as major. Gemtuzumab and Ziprasidone 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. Gemtuzumab ozogamicin has been associated with QT prolongation, and ziprasidone also prolongs QT. Combined use raises the risk of ventricular arrhythmias including torsades de pointes, especially with electrolyte disturbances from chemotherapy.
How serious is the interaction between Gemtuzumab and Ziprasidone?
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 if an alternative antipsychotic is available; otherwise monitor ECG and correct potassium and magnesium before and during therapy.
What other medicines interact with Ziprasidone?
MediHelp also lists interactions of Ziprasidone with, for example, Amiodarone, Amitriptyline, Arsenic trioxide. The full list is on the Ziprasidone page.
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