Drug interactions
Haloperidol + Tiotropium
Severity: Minor
Haloperidol and Tiotropium: 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 additive effects with tiotropium are possible but generally small. Inhaled tiotropium does not meaningfully alter haloperidol absorption.
What this interaction means in plain words
Haloperidol and Tiotropium 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; Tiotropium belongs to Respiratory.
Why it happens
Weak additive muscarinic receptor antagonism.
What to do
No routine adjustment is needed. Monitor for dry mouth, constipation and urinary hesitancy.
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 Tiotropium
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 Tiotropium?
MediHelp rates the interaction as minor. Haloperidol and Tiotropium 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 additive effects with tiotropium are possible but generally small. Inhaled tiotropium does not meaningfully alter haloperidol absorption.
How serious is the interaction between Haloperidol and Tiotropium?
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 adjustment is needed. Monitor for dry mouth, constipation and urinary hesitancy.
What other medicines interact with Tiotropium?
MediHelp also lists interactions of Tiotropium with, for example, Glycopyrrolate inhaled, Indacaterol-glycopyrronium, Revefenacin. The full list is on the Tiotropium page.
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