Drug interactions
Brimonidine + Ketamine
Severity: Minor
Brimonidine and Ketamine: 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 hypotension, particularly if systemically absorbed. Combined with ketamine, additive sedation is possible, but with ophthalmic use systemic exposure is small.
What this interaction means in plain words
Brimonidine and Ketamine 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; Ketamine belongs to Central Nervous System.
Why it happens
Additive CNS depression from alpha-2 agonism and NMDA antagonism.
What to do
Monitor sedation and blood pressure during procedures; no dose change is usually required.
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?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Brimonidine and Ketamine, the additional notes, the evidence detail and the whole-prescription interaction checker.
- Full clinical management advice
- Additional notes
- Evidence detail
- Interaction checker for a whole prescription
Try Pro+ free for 7 days on the web. No card needed.
Other interactions of Ketamine
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 Ketamine?
MediHelp rates the interaction as minor. Brimonidine and Ketamine 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 hypotension, particularly if systemically absorbed. Combined with ketamine, additive sedation is possible, but with ophthalmic use systemic exposure is small.
How serious is the interaction between Brimonidine and Ketamine?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor sedation and blood pressure during procedures; no dose change is usually required.
What other medicines interact with Ketamine?
MediHelp also lists interactions of Ketamine with, for example, Benzhydrocodone / acetaminophen, Brexanolone, Buprenorphine buccal. The full list is on the Ketamine page.
Full monographs, dosing and an interaction checker in the MediHelp app
Open the complete reference, check multi-drug interactions and use dosing tools in the MediHelp app.
