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Drug interactions

Gemtuzumab + Trazodone

Severity: Moderate

Gemtuzumab and Trazodone: 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 agents have been associated with QT prolongation, so combined use may raise the risk of ventricular arrhythmia, particularly in patients with electrolyte disturbances or heart disease.

What this interaction means in plain words

Gemtuzumab and Trazodone 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.

Evidence level: Low

Why it happens

Additive QT interval prolongation.

What to do

Obtain an ECG and check electrolytes before and during treatment, correcting potassium and magnesium deficits. Consider an alternative antidepressant if the QTc becomes markedly prolonged.

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?

Bring a full list of your medicines, including over-the-counter products, supplements and herbal remedies, to every pharmacy visit.

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Frequently asked questions

Can I take Gemtuzumab with Trazodone?

MediHelp rates the interaction as moderate. Gemtuzumab and Trazodone 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 agents have been associated with QT prolongation, so combined use may raise the risk of ventricular arrhythmia, particularly in patients with electrolyte disturbances or heart disease.

How serious is the interaction between Gemtuzumab and Trazodone?

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 an ECG and check electrolytes before and during treatment, correcting potassium and magnesium deficits. Consider an alternative antidepressant if the QTc becomes markedly prolonged.

What other medicines interact with Trazodone?

MediHelp also lists interactions of Trazodone with, for example, Arsenic trioxide, Ibutilide, Isocarboxazid. The full list is on the Trazodone page.

Full monographs, dosing and an interaction checker in the MediHelp app

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