Drug interactions
Haloperidol + Oxybutynin
Severity: Minor
Haloperidol 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
Haloperidol has weak anticholinergic activity, so the combination adds modestly to constipation, dry mouth, urinary retention and confusion. Anticholinergics have also been reported to reduce antipsychotic effect in some patients.
What this interaction means in plain words
Haloperidol 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.
Haloperidol belongs to Central Nervous System; Oxybutynin belongs to Genitourinary.
Why it happens
Additive antimuscarinic effects.
What to do
Monitor for anticholinergic effects and psychiatric response, particularly in older adults.
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
Other interactions of Haloperidol
- Dofetilide + Haloperidol Contraindicated
- Dronedarone + Haloperidol Contraindicated
- Haloperidol + Ibutilide Contraindicated
- Haloperidol + Levoketoconazole Contraindicated
- Haloperidol + Panobinostat Contraindicated
- Haloperidol + Pimozide Contraindicated
Frequently asked questions
Can I take Haloperidol with Oxybutynin?
MediHelp rates the interaction as minor. Haloperidol 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. Haloperidol has weak anticholinergic activity, so the combination adds modestly to constipation, dry mouth, urinary retention and confusion. Anticholinergics have also been reported to reduce antipsychotic effect in some patients.
How serious is the interaction between Haloperidol 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: Monitor for anticholinergic effects and psychiatric response, particularly in older adults.
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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