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Drug interactions

Erdafitinib + Idarubicin

Severity: Moderate

Erdafitinib and Idarubicin: 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

Erdafitinib can inhibit P-glycoprotein, and idarubicin is a P-gp substrate. Higher idarubicin exposure may increase myelosuppression and cardiotoxicity, although clinical data for this pair are limited.

What this interaction means in plain words

Erdafitinib and Idarubicin 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.

Erdafitinib belongs to Oncology; Idarubicin belongs to Oncology.

Evidence level: Low

Why it happens

Erdafitinib inhibits P-gp efflux, which may increase idarubicin absorption and tissue exposure.

What to do

Monitor blood counts and cardiac status closely. Consider separating erdafitinib from idarubicin by at least 6 hours where feasible, per labeling for P-gp substrates.

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 Erdafitinib with Idarubicin?

MediHelp rates the interaction as moderate. Erdafitinib and Idarubicin 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. Erdafitinib can inhibit P-glycoprotein, and idarubicin is a P-gp substrate. Higher idarubicin exposure may increase myelosuppression and cardiotoxicity, although clinical data for this pair are limited.

How serious is the interaction between Erdafitinib and Idarubicin?

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 blood counts and cardiac status closely. Consider separating erdafitinib from idarubicin by at least 6 hours where feasible, per labeling for P-gp substrates.

What other medicines interact with Idarubicin?

MediHelp also lists interactions of Idarubicin with, for example, Adenovirus types 4 and 7 live, Belatacept, Cyclophosphamide. The full list is on the Idarubicin page.

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

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