Drug interactions
Capecitabine + Erdafitinib
Severity: Moderate
Capecitabine 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
Capecitabine, via fluorouracil, may inhibit CYP2C9, the main enzyme clearing erdafitinib, potentially raising erdafitinib exposure and its toxicities such as hyperphosphatemia, ocular and skin or nail effects. The effect is modest and mainly established for warfarin.
What this interaction means in plain words
Capecitabine 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.
Capecitabine belongs to Oncology; Erdafitinib belongs to Oncology.
Why it happens
Possible inhibition of CYP2C9-mediated erdafitinib metabolism.
What to do
Monitor for erdafitinib adverse reactions such as hyperphosphatemia and ocular symptoms, and reduce the erdafitinib dose if toxicity develops.
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?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Capecitabine and Erdafitinib, the additional notes, the evidence detail and the whole-prescription interaction checker.
- Full clinical management advice
- Additional notes
- Evidence detail
- Interaction checker for a whole prescription
Try Pro+ free for 7 days on the web. No card needed.
Other interactions of Capecitabine
Other interactions of Erdafitinib
Frequently asked questions
Can I take Capecitabine with Erdafitinib?
MediHelp rates the interaction as moderate. Capecitabine 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. Capecitabine, via fluorouracil, may inhibit CYP2C9, the main enzyme clearing erdafitinib, potentially raising erdafitinib exposure and its toxicities such as hyperphosphatemia, ocular and skin or nail effects. The effect is modest and mainly established for warfarin.
How serious is the interaction between Capecitabine 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 erdafitinib adverse reactions such as hyperphosphatemia and ocular symptoms, and reduce the erdafitinib dose if toxicity develops.
What other medicines interact with Capecitabine?
MediHelp also lists interactions of Capecitabine with, for example, Adenovirus types 4 and 7 live, Arsenic trioxide, Axicabtagene ciloleucel. The full list is on the Capecitabine page.
Full monographs, dosing and an interaction checker in the MediHelp app
Open the complete reference, check multi-drug interactions and use dosing tools in the MediHelp app.
