Drug interactions
Darifenacin + Sunitinib
Severity: Minor
Darifenacin and Sunitinib: 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
Darifenacin is a weak-to-moderate CYP3A4 inhibitor in practice and is not expected to raise sunitinib exposure meaningfully. The predicted interaction is mainly theoretical.
What this interaction means in plain words
Darifenacin and Sunitinib have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Darifenacin belongs to Genitourinary; Sunitinib belongs to Oncology.
Why it happens
Possible weak CYP3A4 inhibition; darifenacin is mainly a CYP3A4 and CYP2D6 substrate.
What to do
No dose change is generally needed; monitor for sunitinib toxicity such as fatigue, hypertension and myelosuppression.
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?
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Other interactions of Darifenacin
Other interactions of Sunitinib
- Adagrasib + Sunitinib Major
- Amiodarone + Sunitinib Major
- Amisulpride + Sunitinib Major
- Anagrelide + Sunitinib Major
- Apalutamide + Sunitinib Major
- Arsenic trioxide + Sunitinib Major
Frequently asked questions
Can I take Darifenacin with Sunitinib?
MediHelp rates the interaction as minor. Darifenacin and Sunitinib have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Darifenacin is a weak-to-moderate CYP3A4 inhibitor in practice and is not expected to raise sunitinib exposure meaningfully. The predicted interaction is mainly theoretical.
How serious is the interaction between Darifenacin and Sunitinib?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: No dose change is generally needed; monitor for sunitinib toxicity such as fatigue, hypertension and myelosuppression.
What other medicines interact with Darifenacin?
MediHelp also lists interactions of Darifenacin with, for example, Atazanavir, Bethanechol, Clarithromycin. The full list is on the Darifenacin page.
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