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Drug interactions

Trastuzumab deruxtecan + Vincristine

Severity: Moderate

Trastuzumab deruxtecan and Vincristine: 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 can cause neutropenia, so combined use may increase the frequency and severity of infections. Trastuzumab deruxtecan also carries a risk of interstitial lung disease.

What this interaction means in plain words

Trastuzumab deruxtecan and Vincristine 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.

Trastuzumab deruxtecan belongs to Oncology; Vincristine belongs to Oncology.

Evidence level: Low

Why it happens

Additive myelosuppression from the topoisomerase I payload and vincristine.

What to do

Monitor complete blood counts frequently and treat febrile neutropenia promptly. Consider dose delays or reductions for severe neutropenia.

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 Trastuzumab deruxtecan with Vincristine?

MediHelp rates the interaction as moderate. Trastuzumab deruxtecan and Vincristine 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 can cause neutropenia, so combined use may increase the frequency and severity of infections. Trastuzumab deruxtecan also carries a risk of interstitial lung disease.

How serious is the interaction between Trastuzumab deruxtecan and Vincristine?

MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor complete blood counts frequently and treat febrile neutropenia promptly. Consider dose delays or reductions for severe neutropenia.

What other medicines interact with Vincristine?

MediHelp also lists interactions of Vincristine with, for example, Adenovirus types 4 and 7 live, Apalutamide, Atazanavir. The full list is on the Vincristine page.

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

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