Drug interactions
Brimonidine + Cyproheptadine
Severity: Minor
Brimonidine and Cyproheptadine: 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 alpha-2 agonist that can cause drowsiness, and some systemic absorption occurs from eye drops. Combined with cyproheptadine, additive sedation is possible but usually mild.
What this interaction means in plain words
Brimonidine and Cyproheptadine 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; Cyproheptadine belongs to Respiratory.
Why it happens
Additive CNS depression from H1 antagonism and central alpha-2 agonism.
What to do
Counsel the patient about possible drowsiness; no routine dose change is needed.
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 Cyproheptadine
- Cyproheptadine + Isocarboxazid Contraindicated
- Cyproheptadine + Phenelzine Contraindicated
- Cyproheptadine + Tranylcypromine Contraindicated
- Alfentanil + Cyproheptadine Major
- Belladonna and opium + Cyproheptadine Major
- Benzhydrocodone / acetaminophen + Cyproheptadine 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 Cyproheptadine?
MediHelp rates the interaction as minor. Brimonidine and Cyproheptadine 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 alpha-2 agonist that can cause drowsiness, and some systemic absorption occurs from eye drops. Combined with cyproheptadine, additive sedation is possible but usually mild.
How serious is the interaction between Brimonidine and Cyproheptadine?
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; no routine dose change is needed.
What other medicines interact with Cyproheptadine?
MediHelp also lists interactions of Cyproheptadine with, for example, Isocarboxazid, Phenelzine, Tranylcypromine. The full list is on the Cyproheptadine page.
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