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Drug interactions

Glycopyrronium tosylate + Pimozide

Severity: Minor

Glycopyrronium tosylate and Pimozide: 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

Topical glycopyrronium tosylate has low systemic absorption but its labeling warns of additive anticholinergic effects with other anticholinergic drugs. Pimozide has some anticholinergic activity, so effects like dry mouth, urinary retention and blurred vision may be slightly increased.

What this interaction means in plain words

Glycopyrronium tosylate and Pimozide 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

Possible additive antimuscarinic effects from limited systemic absorption.

What to do

Monitor for anticholinergic symptoms and stop or reduce the topical product if they appear.

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 Glycopyrronium tosylate with Pimozide?

MediHelp rates the interaction as minor. Glycopyrronium tosylate and Pimozide have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Topical glycopyrronium tosylate has low systemic absorption but its labeling warns of additive anticholinergic effects with other anticholinergic drugs. Pimozide has some anticholinergic activity, so effects like dry mouth, urinary retention and blurred vision may be slightly increased.

How serious is the interaction between Glycopyrronium tosylate and Pimozide?

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 for anticholinergic symptoms and stop or reduce the topical product if they appear.

What other medicines interact with Pimozide?

MediHelp also lists interactions of Pimozide with, for example, Adagrasib, Amiodarone, Amisulpride. The full list is on the Pimozide page.

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