Drug interactions
Dexmedetomidine + Pimozide
Severity: Moderate
Dexmedetomidine 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
Dexmedetomidine is a sedative alpha-2 agonist that causes bradycardia and hypotension, and can add to the sedation of pimozide. Bradycardia also increases the risk of torsades de pointes in patients taking a QT-prolonging drug such as pimozide.
What this interaction means in plain words
Dexmedetomidine 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.
Dexmedetomidine belongs to Central Nervous System; Pimozide belongs to Central Nervous System.
Why it happens
Additive CNS depression, with dexmedetomidine-induced bradycardia increasing the effect of pimozide's QT prolongation.
What to do
Monitor sedation level, heart rate, blood pressure and ECG during infusion. Reduce the dexmedetomidine dose if excessive sedation or bradycardia occurs.
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 Dexmedetomidine
Frequently asked questions
Can I take Dexmedetomidine with Pimozide?
MediHelp rates the interaction as moderate. Dexmedetomidine 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. Dexmedetomidine is a sedative alpha-2 agonist that causes bradycardia and hypotension, and can add to the sedation of pimozide. Bradycardia also increases the risk of torsades de pointes in patients taking a QT-prolonging drug such as pimozide.
How serious is the interaction between Dexmedetomidine 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 sedation level, heart rate, blood pressure and ECG during infusion. Reduce the dexmedetomidine dose if excessive sedation or bradycardia occurs.
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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