Drug interactions
Darifenacin + Galantamine
Severity: Moderate
Darifenacin and Galantamine: 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
Galantamine is a cholinesterase inhibitor and darifenacin is a muscarinic antagonist, so they pharmacologically oppose one another. The combination may reduce the benefit of both drugs, and anticholinergics can worsen cognition in dementia.
What this interaction means in plain words
Darifenacin and Galantamine 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.
Darifenacin belongs to Genitourinary; Galantamine belongs to Central Nervous System.
Why it happens
Opposing pharmacodynamic effects at cholinergic synapses.
What to do
Avoid antimuscarinics in patients taking cholinesterase inhibitors where possible, and consider a beta-3 agonist for bladder symptoms. If combined, monitor cognition and bladder response.
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
Other interactions of Galantamine
- Galantamine + Memantine-donepezil Major
- Galantamine + Physostigmine Major
- Galantamine + Ponesimod Major
- Galantamine + Rivastigmine Major
- Amifampridine + Galantamine Moderate
- Amiodarone + Galantamine Moderate
Frequently asked questions
Can I take Darifenacin with Galantamine?
MediHelp rates the interaction as moderate. Darifenacin and Galantamine 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. Galantamine is a cholinesterase inhibitor and darifenacin is a muscarinic antagonist, so they pharmacologically oppose one another. The combination may reduce the benefit of both drugs, and anticholinergics can worsen cognition in dementia.
How serious is the interaction between Darifenacin and Galantamine?
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 antimuscarinics in patients taking cholinesterase inhibitors where possible, and consider a beta-3 agonist for bladder symptoms. If combined, monitor cognition and bladder response.
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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