Drug interactions
Darifenacin + Henbane
Severity: Moderate
Darifenacin and Henbane: 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
Henbane contains anticholinergic alkaloids such as hyoscyamine and scopolamine. Together with darifenacin they can cause additive antimuscarinic toxicity including confusion, tachycardia, urinary retention and constipation.
What this interaction means in plain words
Darifenacin and Henbane 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.
Why it happens
Additive pharmacodynamic antimuscarinic effects.
What to do
Avoid concurrent use of henbane preparations and monitor for anticholinergic toxicity if exposure occurs.
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 Darifenacin
Frequently asked questions
Can I take Darifenacin with Henbane?
MediHelp rates the interaction as moderate. Darifenacin and Henbane 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. Henbane contains anticholinergic alkaloids such as hyoscyamine and scopolamine. Together with darifenacin they can cause additive antimuscarinic toxicity including confusion, tachycardia, urinary retention and constipation.
How serious is the interaction between Darifenacin and Henbane?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid concurrent use of henbane preparations and monitor for anticholinergic toxicity if exposure occurs.
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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