Drug interactions
Pentazocine + Pimozide
Severity: Moderate
Pentazocine 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
Both agents cause CNS depression, so sedation and psychomotor impairment may be increased. Pimozide also carries QT prolongation risk, which makes the overall regimen more delicate.
What this interaction means in plain words
Pentazocine 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.
Pentazocine belongs to Musculoskeletal; Pimozide belongs to Central Nervous System.
Why it happens
Additive CNS depressant effects; pimozide independently prolongs QT.
What to do
Use the lowest effective doses and monitor sedation. Check ECG and electrolytes per pimozide labeling, and avoid adding other QT-prolonging drugs.
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 Pentazocine
- Calcium / magnesium / potassium / sodium oxybates + Pentazocine Contraindicated
- Olanzapine / samidorphan + Pentazocine Contraindicated
- Pentazocine + Phenelzine Contraindicated
- Pentazocine + Tranylcypromine Contraindicated
- Alfentanil + Pentazocine Major
- Alprazolam + Pentazocine Major
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 Pentazocine with Pimozide?
MediHelp rates the interaction as moderate. Pentazocine 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. Both agents cause CNS depression, so sedation and psychomotor impairment may be increased. Pimozide also carries QT prolongation risk, which makes the overall regimen more delicate.
How serious is the interaction between Pentazocine 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: Use the lowest effective doses and monitor sedation. Check ECG and electrolytes per pimozide labeling, and avoid adding other QT-prolonging drugs.
What other medicines interact with Pentazocine?
MediHelp also lists interactions of Pentazocine with, for example, Calcium / magnesium / potassium / sodium oxybates, Olanzapine / samidorphan, Phenelzine. The full list is on the Pentazocine page.
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