Drug interactions
Ketamine + Trifluoperazine
Severity: Moderate
Ketamine and Trifluoperazine: 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
Trifluoperazine is a phenothiazine antipsychotic with sedative and alpha-blocking effects. With ketamine it can increase sedation and may cause hypotension. Phenothiazines may also lower the seizure threshold.
What this interaction means in plain words
Ketamine and Trifluoperazine 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.
Why it happens
Additive CNS depression and alpha-adrenergic blockade.
What to do
Monitor sedation and blood pressure and titrate ketamine to effect. Consider lower initial ketamine doses.
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?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Ketamine and Trifluoperazine, 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 14 days on the web. No card needed.
Other interactions of Ketamine
Frequently asked questions
Can I take Ketamine with Trifluoperazine?
MediHelp rates the interaction as moderate. Ketamine and Trifluoperazine 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. Trifluoperazine is a phenothiazine antipsychotic with sedative and alpha-blocking effects. With ketamine it can increase sedation and may cause hypotension. Phenothiazines may also lower the seizure threshold.
How serious is the interaction between Ketamine and Trifluoperazine?
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 sedation and blood pressure and titrate ketamine to effect. Consider lower initial ketamine doses.
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.
