Drug interactions
Rivastigmine + Tolterodine
Severity: Moderate
Rivastigmine and Tolterodine: 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
Rivastigmine increases cholinergic activity, while tolterodine blocks muscarinic receptors, so they can counteract each other. Cognitive benefit may be reduced, and anticholinergics are generally discouraged in dementia.
What this interaction means in plain words
Rivastigmine and Tolterodine 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.
Rivastigmine belongs to Central Nervous System; Tolterodine belongs to Genitourinary.
Why it happens
Pharmacodynamic antagonism between a cholinesterase inhibitor and a muscarinic antagonist.
What to do
Avoid the combination where possible and consider non-pharmacologic measures or a mirabegron-type alternative. Monitor cognition if both are used.
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 Tolterodine
Other interactions of Rivastigmine
Frequently asked questions
Can I take Rivastigmine with Tolterodine?
MediHelp rates the interaction as moderate. Rivastigmine and Tolterodine 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. Rivastigmine increases cholinergic activity, while tolterodine blocks muscarinic receptors, so they can counteract each other. Cognitive benefit may be reduced, and anticholinergics are generally discouraged in dementia.
How serious is the interaction between Rivastigmine and Tolterodine?
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 the combination where possible and consider non-pharmacologic measures or a mirabegron-type alternative. Monitor cognition if both are used.
What other medicines interact with Tolterodine?
MediHelp also lists interactions of Tolterodine with, for example, Clarithromycin, Clozapine, Cobicistat. The full list is on the Tolterodine page.
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