Drug interactions
Glycopyrronium + Oxybutynin transdermal
Severity: Moderate
Glycopyrronium and Oxybutynin transdermal: moderate 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
Both drugs are antimuscarinics, so combined therapy increases anticholinergic effects such as dry mouth, constipation, urinary retention and blurred vision. Transdermal oxybutynin still gives systemic exposure.
What this interaction means in plain words
Glycopyrronium and Oxybutynin transdermal can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Why it happens
Additive muscarinic receptor antagonism.
What to do
Avoid duplicate antimuscarinic therapy where possible. Monitor for anticholinergic effects and reduce the dose of one agent if they occur.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
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Other interactions of Glycopyrronium
- Clozapine + Glycopyrronium Major
- Abobotulinumtoxina + Glycopyrronium Moderate
- Aclidinium + Glycopyrronium Moderate
- Amantadine + Glycopyrronium Moderate
- Amitriptyline + Glycopyrronium Moderate
- Amoxapine + Glycopyrronium Moderate
Frequently asked questions
Can I take Glycopyrronium with Oxybutynin transdermal?
MediHelp rates the interaction as moderate. Glycopyrronium and Oxybutynin transdermal can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Both drugs are antimuscarinics, so combined therapy increases anticholinergic effects such as dry mouth, constipation, urinary retention and blurred vision. Transdermal oxybutynin still gives systemic exposure.
How serious is the interaction between Glycopyrronium and Oxybutynin transdermal?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid duplicate antimuscarinic therapy where possible. Monitor for anticholinergic effects and reduce the dose of one agent if they occur.
What other medicines interact with Glycopyrronium?
MediHelp also lists interactions of Glycopyrronium with, for example, Clozapine, Abobotulinumtoxina, Aclidinium. The full list is on the Glycopyrronium page.
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