Drug interactions
Pimozide + Topiramate
Severity: Moderate
Pimozide and Topiramate: 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 depress the CNS, so combined use can produce additive sedation, dizziness and cognitive slowing. Pimozide may also lower the seizure threshold, a concern in patients taking topiramate for epilepsy.
What this interaction means in plain words
Pimozide and Topiramate 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 belongs to Central Nervous System; Topiramate belongs to Central Nervous System.
Why it happens
Additive CNS depressant effects; antipsychotic lowering of seizure threshold.
What to do
Titrate doses slowly and monitor sedation and seizure control. Advise caution with driving and machinery.
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 Topiramate
Frequently asked questions
Can I take Pimozide with Topiramate?
MediHelp rates the interaction as moderate. Pimozide and Topiramate 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 depress the CNS, so combined use can produce additive sedation, dizziness and cognitive slowing. Pimozide may also lower the seizure threshold, a concern in patients taking topiramate for epilepsy.
How serious is the interaction between Pimozide and Topiramate?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Titrate doses slowly and monitor sedation and seizure control. Advise caution with driving and machinery.
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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