Drug interactions
Baclofen + Pimozide
Severity: Moderate
Baclofen 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
Pimozide can cause sedation and baclofen may add to drowsiness and dizziness. Pimozide's main hazard is QT prolongation, which baclofen does not meaningfully affect, so the interaction is mainly additive CNS depression.
What this interaction means in plain words
Baclofen 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.
Baclofen belongs to Musculoskeletal; Pimozide belongs to Central Nervous System.
Why it happens
Additive CNS depression from GABA-B agonism and dopamine D2 blockade.
What to do
Monitor for sedation and falls, and counsel on driving. Continue routine ECG and electrolyte monitoring for pimozide.
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 Baclofen
Other interactions of Pimozide
- Adagrasib + Pimozide Contraindicated
- Amiodarone + Pimozide Contraindicated
- Amisulpride + Pimozide Contraindicated
- Amitriptyline + Pimozide Contraindicated
- Amoxapine + Pimozide Contraindicated
- Anagrelide + Pimozide Contraindicated
Frequently asked questions
Can I take Baclofen with Pimozide?
MediHelp rates the interaction as moderate. Baclofen 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. Pimozide can cause sedation and baclofen may add to drowsiness and dizziness. Pimozide's main hazard is QT prolongation, which baclofen does not meaningfully affect, so the interaction is mainly additive CNS depression.
How serious is the interaction between Baclofen 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 sedation and falls, and counsel on driving. Continue routine ECG and electrolyte monitoring for pimozide.
What other medicines interact with Baclofen?
MediHelp also lists interactions of Baclofen with, for example, Alfentanil, Amobarbital, Belladonna and opium. The full list is on the Baclofen page.
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