Drug interactions
Dexchlorpheniramine + Haloperidol
Severity: Moderate
Dexchlorpheniramine 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 cause sedation, and dexchlorpheniramine is a sedating antihistamine with anticholinergic effects. Together they may increase drowsiness, impaired psychomotor performance and anticholinergic effects, especially in older adults.
What this interaction means in plain words
Dexchlorpheniramine 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.
Dexchlorpheniramine belongs to Respiratory; Haloperidol belongs to Central Nervous System.
Why it happens
Additive CNS depression and anticholinergic effects through H1 antagonism and antipsychotic receptor blockade.
What to do
Counsel patients about drowsiness and avoid driving until response is known. Consider a non-sedating antihistamine, particularly in elderly patients.
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?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Dexchlorpheniramine and Haloperidol, the additional notes, the evidence detail and the whole-prescription interaction checker.
- Full clinical management advice
- Additional notes
- Evidence detail
- Interaction checker for a whole prescription
Try Pro+ free for 7 days on the web. No card needed.
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 Dexchlorpheniramine
- Alprazolam + Dexchlorpheniramine Moderate
- Amisulpride + Dexchlorpheniramine Moderate
- Amitriptyline + Dexchlorpheniramine Moderate
- Amobarbital + Dexchlorpheniramine Moderate
- Asenapine + Dexchlorpheniramine Moderate
- Azelastine-fluticasone + Dexchlorpheniramine Moderate
Frequently asked questions
Can I take Dexchlorpheniramine with Haloperidol?
MediHelp rates the interaction as moderate. Dexchlorpheniramine 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 cause sedation, and dexchlorpheniramine is a sedating antihistamine with anticholinergic effects. Together they may increase drowsiness, impaired psychomotor performance and anticholinergic effects, especially in older adults.
How serious is the interaction between Dexchlorpheniramine 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: Counsel patients about drowsiness and avoid driving until response is known. Consider a non-sedating antihistamine, particularly in elderly patients.
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.
Full monographs, dosing and an interaction checker in the MediHelp app
Open the complete reference, check multi-drug interactions and use dosing tools in the MediHelp app.
