Drug interactions
Pimozide + Sumatriptan intranasal
Severity: Moderate
Pimozide and Sumatriptan intranasal: 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
Antipsychotics with serotonergic activity combined with triptans have been associated with serotonin syndrome, although the risk is considered low. Pimozide's dopamine blockade may also contribute to neuroleptic malignant syndrome in susceptible patients.
What this interaction means in plain words
Pimozide and Sumatriptan intranasal 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.
Why it happens
Additive serotonergic and dopamine-blocking effects; the exact mechanism is not firmly established.
What to do
Watch for agitation, tremor, hyperthermia, rigidity and autonomic instability after starting or increasing either drug. Stop the triptan and treat if serotonin toxicity is suspected.
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
Frequently asked questions
Can I take Pimozide with Sumatriptan intranasal?
MediHelp rates the interaction as moderate. Pimozide and Sumatriptan intranasal 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. Antipsychotics with serotonergic activity combined with triptans have been associated with serotonin syndrome, although the risk is considered low. Pimozide's dopamine blockade may also contribute to neuroleptic malignant syndrome in susceptible patients.
How serious is the interaction between Pimozide and Sumatriptan intranasal?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Watch for agitation, tremor, hyperthermia, rigidity and autonomic instability after starting or increasing either drug. Stop the triptan and treat if serotonin toxicity is suspected.
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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