Drug interactions
Echothiophate iodide + Tolterodine
Severity: Minor
Echothiophate iodide and Tolterodine: 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
Echothiophate is an irreversible cholinesterase inhibitor that raises acetylcholine activity, while tolterodine blocks muscarinic receptors. The two drugs act in opposite directions, so the effect of each may be reduced. Clinical significance is uncertain with ophthalmic use.
What this interaction means in plain words
Echothiophate iodide and Tolterodine have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Why it happens
Pharmacodynamic antagonism between cholinesterase inhibition and muscarinic receptor blockade.
What to do
Monitor intraocular pressure and bladder symptoms for loss of effect of either drug. No dose change is routinely needed.
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 Tolterodine
Frequently asked questions
Can I take Echothiophate iodide with Tolterodine?
MediHelp rates the interaction as minor. Echothiophate iodide and Tolterodine have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Echothiophate is an irreversible cholinesterase inhibitor that raises acetylcholine activity, while tolterodine blocks muscarinic receptors. The two drugs act in opposite directions, so the effect of each may be reduced. Clinical significance is uncertain with ophthalmic use.
How serious is the interaction between Echothiophate iodide and Tolterodine?
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 intraocular pressure and bladder symptoms for loss of effect of either drug. No dose change is routinely needed.
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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