Drug interactions
Bosentan + Darifenacin
Severity: Minor
Bosentan 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
Bosentan is a CYP3A4 inducer and may reduce darifenacin concentrations, possibly decreasing its effect on overactive bladder symptoms.
What this interaction means in plain words
Bosentan 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.
Bosentan belongs to Miscellaneous; Darifenacin belongs to Genitourinary.
Why it happens
Induction of CYP3A4 increases darifenacin metabolism.
What to do
Monitor symptom control and increase the darifenacin dose within the labeled range if response is reduced.
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 Bosentan
- Bosentan + Cyclosporin Contraindicated
- Bosentan + Glibenclamide Contraindicated
- Bosentan + Glyburide-metformin Contraindicated
- Bosentan + Lonafarnib Contraindicated
- Bosentan + Sparsentan Contraindicated
- Artemether / lumefantrine + Bosentan Major
Frequently asked questions
Can I take Bosentan with Darifenacin?
MediHelp rates the interaction as minor. Bosentan 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. Bosentan is a CYP3A4 inducer and may reduce darifenacin concentrations, possibly decreasing its effect on overactive bladder symptoms.
How serious is the interaction between Bosentan 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: Monitor symptom control and increase the darifenacin dose within the labeled range if response is reduced.
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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