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Drug interactions

Diphenoxylate-atropine + Echothiophate iodide

Severity: Minor

Diphenoxylate-atropine and Echothiophate iodide: 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 ophthalmic irreversible cholinesterase inhibitor, and atropine is an antimuscarinic that opposes cholinergic stimulation. Systemic absorption from eye drops is small, and atropine may partly counter echothiophate's effects.

What this interaction means in plain words

Diphenoxylate-atropine and Echothiophate iodide have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.

Evidence level: Low

Why it happens

Pharmacodynamic antagonism between a cholinesterase inhibitor and an antimuscarinic.

What to do

No routine action is needed. Watch for reduced miotic effect or unexpected cholinergic or anticholinergic symptoms.

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?

Bring a full list of your medicines, including over-the-counter products, supplements and herbal remedies, to every pharmacy visit.

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Frequently asked questions

Can I take Diphenoxylate-atropine with Echothiophate iodide?

MediHelp rates the interaction as minor. Diphenoxylate-atropine and Echothiophate iodide 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 ophthalmic irreversible cholinesterase inhibitor, and atropine is an antimuscarinic that opposes cholinergic stimulation. Systemic absorption from eye drops is small, and atropine may partly counter echothiophate's effects.

How serious is the interaction between Diphenoxylate-atropine and Echothiophate iodide?

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 miotic effect or unexpected cholinergic or anticholinergic symptoms.

What other medicines interact with Diphenoxylate-atropine?

MediHelp also lists interactions of Diphenoxylate-atropine with, for example, Isocarboxazid, Phenelzine, Tranylcypromine. The full list is on the Diphenoxylate-atropine page.

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