Drug interactions
Crofelemer + Darifenacin
Severity: Minor
Crofelemer and Darifenacin: 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
Crofelemer is minimally absorbed and may inhibit CYP3A4 only in the gut. A clinically important rise in darifenacin exposure is unlikely.
What this interaction means in plain words
Crofelemer and Darifenacin have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Crofelemer belongs to Gastrointestinal Tract; Darifenacin belongs to Genitourinary.
Why it happens
Possible intestinal CYP3A4 inhibition by crofelemer.
What to do
No dose change is needed; watch for anticholinergic effects if symptoms emerge.
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 Crofelemer
- Crofelemer + Ergotamine Moderate
- Alfuzosin + Crofelemer Minor
- Amiodarone + Crofelemer Minor
- Apixaban + Crofelemer Minor
- Aprepitant + Crofelemer Minor
- Armodafinil + Crofelemer Minor
Frequently asked questions
Can I take Crofelemer with Darifenacin?
MediHelp rates the interaction as minor. Crofelemer and Darifenacin have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Crofelemer is minimally absorbed and may inhibit CYP3A4 only in the gut. A clinically important rise in darifenacin exposure is unlikely.
How serious is the interaction between Crofelemer and Darifenacin?
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 needed; watch for anticholinergic effects if symptoms emerge.
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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