Drug interactions
Echothiophate iodide + Oxybutynin
Severity: Minor
Echothiophate iodide and Oxybutynin: 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 used in the eye, whereas oxybutynin is a muscarinic antagonist. They have opposing cholinergic actions, though systemic exposure from eye drops is usually small, so any clinical effect is likely limited.
What this interaction means in plain words
Echothiophate iodide and Oxybutynin 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 a cholinesterase inhibitor and a muscarinic antagonist.
What to do
No routine action is needed; monitor for reduced effect of either drug if systemic cholinergic symptoms or reduced miotic response occur.
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 Oxybutynin
Frequently asked questions
Can I take Echothiophate iodide with Oxybutynin?
MediHelp rates the interaction as minor. Echothiophate iodide and Oxybutynin 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 used in the eye, whereas oxybutynin is a muscarinic antagonist. They have opposing cholinergic actions, though systemic exposure from eye drops is usually small, so any clinical effect is likely limited.
How serious is the interaction between Echothiophate iodide and Oxybutynin?
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; monitor for reduced effect of either drug if systemic cholinergic symptoms or reduced miotic response occur.
What other medicines interact with Oxybutynin?
MediHelp also lists interactions of Oxybutynin with, for example, Bethanechol, Clozapine, Potassium chloride. The full list is on the Oxybutynin page.
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