Drug interactions
Brimonidine + Risperidone
Severity: Minor
Brimonidine and Risperidone: 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
Brimonidine is an ophthalmic preparation with low systemic exposure, though it can cause drowsiness and hypotension in some patients. Added sedation with risperidone is possible but likely to be small.
What this interaction means in plain words
Brimonidine and Risperidone 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; Risperidone belongs to Central Nervous System.
Why it happens
Possible additive CNS depression and hypotension from alpha-2 agonism and risperidone.
What to do
No routine change is needed. Advise the patient to report marked drowsiness or dizziness.
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 Risperidone
- Ibutilide + Risperidone Contraindicated
- Risperidone + Vandetanib Contraindicated
- Adagrasib + Risperidone Major
- Amiodarone + Risperidone Major
- Amisulpride + Risperidone Major
- Amoxapine + Risperidone Major
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 Risperidone?
MediHelp rates the interaction as minor. Brimonidine and Risperidone 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 is an ophthalmic preparation with low systemic exposure, though it can cause drowsiness and hypotension in some patients. Added sedation with risperidone is possible but likely to be small.
How serious is the interaction between Brimonidine and Risperidone?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: No routine change is needed. Advise the patient to report marked drowsiness or dizziness.
What other medicines interact with Risperidone?
MediHelp also lists interactions of Risperidone with, for example, Ibutilide, Vandetanib, Adagrasib. The full list is on the Risperidone page.
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