Drug interactions
Desloratadine + Erdafitinib
Severity: Moderate
Desloratadine and Erdafitinib: 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 inhibits P-glycoprotein and may raise exposure to P-gp substrates such as desloratadine. Because desloratadine has a wide therapeutic margin, the clinical consequence is usually limited.
What this interaction means in plain words
Desloratadine and Erdafitinib 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.
Desloratadine belongs to Respiratory; Erdafitinib belongs to Oncology.
Why it happens
Inhibition of intestinal and cellular P-glycoprotein efflux by erdafitinib increases desloratadine absorption.
What to do
Monitor for antihistamine adverse effects such as drowsiness or palpitations. Separating doses by at least 6 hours is a reasonable measure if concern exists.
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 Desloratadine
- Desloratadine + Isocarboxazid Moderate
- Desloratadine + Tranylcypromine Moderate
- Desloratadine + Zuranolone Moderate
- Amifampridine + Desloratadine Minor
- Berotralstat + Desloratadine Minor
- Bosutinib + Desloratadine Minor
Other interactions of Erdafitinib
Frequently asked questions
Can I take Desloratadine with Erdafitinib?
MediHelp rates the interaction as moderate. Desloratadine and Erdafitinib 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 inhibits P-glycoprotein and may raise exposure to P-gp substrates such as desloratadine. Because desloratadine has a wide therapeutic margin, the clinical consequence is usually limited.
How serious is the interaction between Desloratadine and Erdafitinib?
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 for antihistamine adverse effects such as drowsiness or palpitations. Separating doses by at least 6 hours is a reasonable measure if concern exists.
What other medicines interact with Desloratadine?
MediHelp also lists interactions of Desloratadine with, for example, Isocarboxazid, Tranylcypromine, Zuranolone. The full list is on the Desloratadine page.
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