Drug interactions
Brimonidine + Isoflurane
Severity: Moderate
Brimonidine and Isoflurane: 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
Brimonidine is an alpha-2 agonist that can cause sedation and hypotension, mainly with systemic absorption from ophthalmic use. It may reduce anesthetic requirements and add to hypotension and bradycardia under isoflurane.
What this interaction means in plain words
Brimonidine and Isoflurane 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.
Brimonidine belongs to Miscellaneous; Isoflurane belongs to Central Nervous System.
Why it happens
Additive CNS depression and hemodynamic effects from alpha-2 agonism with volatile anesthetic action.
What to do
Monitor blood pressure, heart rate and anesthetic depth, and adjust isoflurane concentration to effect.
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 Isoflurane
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 Isoflurane?
MediHelp rates the interaction as moderate. Brimonidine and Isoflurane 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. Brimonidine is an alpha-2 agonist that can cause sedation and hypotension, mainly with systemic absorption from ophthalmic use. It may reduce anesthetic requirements and add to hypotension and bradycardia under isoflurane.
How serious is the interaction between Brimonidine and Isoflurane?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor blood pressure, heart rate and anesthetic depth, and adjust isoflurane concentration to effect.
What other medicines interact with Isoflurane?
MediHelp also lists interactions of Isoflurane with, for example, Adrenaline-articaine, Amisulpride, Arsenic trioxide. The full list is on the Isoflurane page.
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