Drug interactions
Dolasetron + Gemtuzumab
Severity: Moderate
Dolasetron and Gemtuzumab: 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
Gemtuzumab ozogamicin has been associated with QT prolongation, and dolasetron also prolongs the QT interval. Their combination may raise the risk of ventricular arrhythmias, especially with electrolyte disturbances.
What this interaction means in plain words
Dolasetron and Gemtuzumab 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 QT interval prolongation.
What to do
Obtain ECG and electrolytes at baseline and during treatment, and replete potassium and magnesium. Prefer an antiemetic with less QT effect when feasible.
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 Dolasetron
- Apomorphine + Dolasetron Contraindicated
- Dofetilide + Dolasetron Contraindicated
- Dolasetron + Ibutilide Contraindicated
- Dolasetron + Pimozide Contraindicated
- Dolasetron + Thioridazine Contraindicated
- Dolasetron + Vandetanib Contraindicated
Frequently asked questions
Can I take Dolasetron with Gemtuzumab?
MediHelp rates the interaction as moderate. Dolasetron and Gemtuzumab 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. Gemtuzumab ozogamicin has been associated with QT prolongation, and dolasetron also prolongs the QT interval. Their combination may raise the risk of ventricular arrhythmias, especially with electrolyte disturbances.
How serious is the interaction between Dolasetron and Gemtuzumab?
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 and electrolytes at baseline and during treatment, and replete potassium and magnesium. Prefer an antiemetic with less QT effect when feasible.
What other medicines interact with Dolasetron?
MediHelp also lists interactions of Dolasetron with, for example, Apomorphine, Dofetilide, Ibutilide. The full list is on the Dolasetron page.
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