Drug interactions
Echothiophate iodide + Fesoterodine
Severity: Minor
Echothiophate iodide and Fesoterodine: 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 a cholinesterase inhibitor used in the eye, and fesoterodine opposes cholinergic effects. Systemic absorption of ophthalmic echothiophate is low, so a clinically meaningful interaction is uncertain.
What this interaction means in plain words
Echothiophate iodide and Fesoterodine 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
Theoretical pharmacodynamic opposition between a cholinesterase inhibitor and a muscarinic antagonist.
What to do
No routine action is needed; watch for reduced effect of either drug if symptoms change.
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?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Echothiophate iodide and Fesoterodine, 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 14 days on the web. No card needed.
Other interactions of Fesoterodine
Frequently asked questions
Can I take Echothiophate iodide with Fesoterodine?
MediHelp rates the interaction as minor. Echothiophate iodide and Fesoterodine 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 a cholinesterase inhibitor used in the eye, and fesoterodine opposes cholinergic effects. Systemic absorption of ophthalmic echothiophate is low, so a clinically meaningful interaction is uncertain.
How serious is the interaction between Echothiophate iodide and Fesoterodine?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: No routine action is needed; watch for reduced effect of either drug if symptoms change.
What other medicines interact with Fesoterodine?
MediHelp also lists interactions of Fesoterodine with, for example, Bethanechol, Clozapine, Levoketoconazole. The full list is on the Fesoterodine 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.
