Drug interactions
Pyridostigmine + Tolterodine
Severity: Moderate
Pyridostigmine 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
Pyridostigmine enhances cholinergic transmission while tolterodine blocks muscarinic receptors, so each can reduce the effect of the other. Bladder symptom control or the gastrointestinal benefits of pyridostigmine may be affected.
What this interaction means in plain words
Pyridostigmine 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.
Pyridostigmine belongs to Central Nervous System; Tolterodine belongs to Genitourinary.
Why it happens
Pharmacodynamic opposition between a cholinesterase inhibitor and a muscarinic antagonist.
What to do
Monitor the response to both drugs. Avoid the combination if an alternative treatment exists.
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?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Pyridostigmine and Tolterodine, the additional notes, the evidence detail and the whole-prescription interaction checker.
- Full clinical management advice
- Additional notes
- Evidence detail
- Interaction checker for a whole prescription
Try Pro+ free for 7 days on the web. No card needed.
Other interactions of Tolterodine
Other interactions of Pyridostigmine
Frequently asked questions
Can I take Pyridostigmine with Tolterodine?
MediHelp rates the interaction as moderate. Pyridostigmine 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. Pyridostigmine enhances cholinergic transmission while tolterodine blocks muscarinic receptors, so each can reduce the effect of the other. Bladder symptom control or the gastrointestinal benefits of pyridostigmine may be affected.
How serious is the interaction between Pyridostigmine 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: Monitor the response to both drugs. Avoid the combination if an alternative treatment exists.
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.
Full monographs, dosing and an interaction checker in the MediHelp app
Open the complete reference, check multi-drug interactions and use dosing tools in the MediHelp app.
