Drug interactions
Brimonidine + Pimozide
Severity: Minor
Brimonidine and Pimozide: minor 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 is sedating and brimonidine can cause drowsiness through central alpha-2 agonism, particularly with significant systemic absorption from ophthalmic use. Combined use may produce additive sedation, though the effect is typically modest with eye drops.
What this interaction means in plain words
Brimonidine and Pimozide have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Brimonidine belongs to Miscellaneous; Pimozide belongs to Central Nervous System.
Why it happens
Additive central nervous system depression from dopamine antagonism and alpha-2 adrenergic agonism.
What to do
Counsel the patient about possible drowsiness and caution with driving or machinery. Use punctal occlusion after instillation to limit systemic absorption.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
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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 Brimonidine
- Brimonidine + Isocarboxazid Contraindicated
- Brimonidine + Linezolid Contraindicated
- Brimonidine + Phenelzine Contraindicated
- Brimonidine + Procarbazine Contraindicated
- Brimonidine + Rasagiline Contraindicated
- Brimonidine + Selegiline Contraindicated
Frequently asked questions
Can I take Brimonidine with Pimozide?
MediHelp rates the interaction as minor. Brimonidine and Pimozide have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Pimozide is sedating and brimonidine can cause drowsiness through central alpha-2 agonism, particularly with significant systemic absorption from ophthalmic use. Combined use may produce additive sedation, though the effect is typically modest with eye drops.
How serious is the interaction between Brimonidine and Pimozide?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Counsel the patient about possible drowsiness and caution with driving or machinery. Use punctal occlusion after instillation to limit systemic absorption.
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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