Drug interactions
Meclizine + Pimozide
Severity: Moderate
Meclizine and Pimozide: 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
Meclizine is a sedating antihistamine with anticholinergic activity, and pimozide has anticholinergic and sedative effects too. Together they can cause more drowsiness, dry mouth, blurred vision, urinary retention and confusion, especially in older patients.
What this interaction means in plain words
Meclizine and Pimozide 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.
Meclizine belongs to Respiratory; Pimozide belongs to Central Nervous System.
Why it happens
Additive antimuscarinic and central sedative effects.
What to do
Monitor for excessive sedation and anticholinergic effects, and use the lowest effective meclizine dose. Consider a non-sedating alternative in older or frail 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?
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Other interactions of Pimozide
- Adagrasib + Pimozide Contraindicated
- Amiodarone + Pimozide Contraindicated
- Amisulpride + Pimozide Contraindicated
- Amitriptyline + Pimozide Contraindicated
- Amoxapine + Pimozide Contraindicated
- Anagrelide + Pimozide Contraindicated
Other interactions of Meclizine
Frequently asked questions
Can I take Meclizine with Pimozide?
MediHelp rates the interaction as moderate. Meclizine and Pimozide 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. Meclizine is a sedating antihistamine with anticholinergic activity, and pimozide has anticholinergic and sedative effects too. Together they can cause more drowsiness, dry mouth, blurred vision, urinary retention and confusion, especially in older patients.
How serious is the interaction between Meclizine and Pimozide?
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 excessive sedation and anticholinergic effects, and use the lowest effective meclizine dose. Consider a non-sedating alternative in older or frail patients.
What other medicines interact with Pimozide?
MediHelp also lists interactions of Pimozide with, for example, Adagrasib, Amiodarone, Amisulpride. The full list is on the Pimozide page.
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