Drug interactions
Glycopyrrolate + Haloperidol
Severity: Moderate
Glycopyrrolate and Haloperidol: 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 have anticholinergic activity, so combined use can produce dry mouth, constipation, urinary retention, blurred vision and confusion. Antimuscarinic effects may also affect gastrointestinal motility and heat regulation.
What this interaction means in plain words
Glycopyrrolate and Haloperidol 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.
Glycopyrrolate belongs to Respiratory; Haloperidol belongs to Central Nervous System.
Why it happens
Additive peripheral and central antimuscarinic effects.
What to do
Monitor for anticholinergic adverse effects such as urinary retention, constipation and overheating, especially in older patients. Reduce the dose or stop one agent if symptoms develop.
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 Haloperidol
- Dofetilide + Haloperidol Contraindicated
- Dronedarone + Haloperidol Contraindicated
- Haloperidol + Ibutilide Contraindicated
- Haloperidol + Levoketoconazole Contraindicated
- Haloperidol + Panobinostat Contraindicated
- Haloperidol + Pimozide Contraindicated
Other interactions of Glycopyrrolate
- Glycopyrrolate + Potassium chloride Major
- Amitriptyline + Glycopyrrolate Moderate
- Atropine + Glycopyrrolate Moderate
- Bethanechol + Glycopyrrolate Moderate
- Chlorpromazine + Glycopyrrolate Moderate
- Clomipramine + Glycopyrrolate Moderate
Frequently asked questions
Can I take Glycopyrrolate with Haloperidol?
MediHelp rates the interaction as moderate. Glycopyrrolate and Haloperidol 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 have anticholinergic activity, so combined use can produce dry mouth, constipation, urinary retention, blurred vision and confusion. Antimuscarinic effects may also affect gastrointestinal motility and heat regulation.
How serious is the interaction between Glycopyrrolate and Haloperidol?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor for anticholinergic adverse effects such as urinary retention, constipation and overheating, especially in older patients. Reduce the dose or stop one agent if symptoms develop.
What other medicines interact with Haloperidol?
MediHelp also lists interactions of Haloperidol with, for example, Dofetilide, Dronedarone, Ibutilide. The full list is on the Haloperidol page.
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