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Drug interactions

Fluticasone + Trastuzumab deruxtecan

Severity: Minor

Fluticasone and Trastuzumab deruxtecan: minor 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

Trastuzumab deruxtecan causes neutropenia and corticosteroids suppress immune function, so infection risk may increase. Inhaled fluticasone contributes little systemic effect.

What this interaction means in plain words

Fluticasone and Trastuzumab deruxtecan have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.

Fluticasone belongs to Respiratory; Trastuzumab deruxtecan belongs to Oncology.

Evidence level: Low

Why it happens

Additive immunosuppression from drug-induced neutropenia and corticosteroid effects.

What to do

Monitor neutrophil counts and for infection; no dose change is needed for inhaled fluticasone.

What to ask your pharmacist

  • Is there anything I should notice while taking both?
  • Do I need to tell my doctor at the next visit?

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 Fluticasone with Trastuzumab deruxtecan?

MediHelp rates the interaction as minor. Fluticasone and Trastuzumab deruxtecan have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Trastuzumab deruxtecan causes neutropenia and corticosteroids suppress immune function, so infection risk may increase. Inhaled fluticasone contributes little systemic effect.

How serious is the interaction between Fluticasone and Trastuzumab deruxtecan?

MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor neutrophil counts and for infection; no dose change is needed for inhaled fluticasone.

What other medicines interact with Fluticasone?

MediHelp also lists interactions of Fluticasone with, for example, Atazanavir, Clarithromycin, Cobicistat. The full list is on the Fluticasone page.

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