Drug interactions
Sevoflurane + Trifluoperazine
Severity: Moderate
Sevoflurane 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 can potentiate the sedative and hypotensive effects of sevoflurane. Both agents can also prolong the QT interval, so arrhythmia risk may rise in susceptible patients.
What this interaction means in plain words
Sevoflurane 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-blockade, with additive QT prolongation through cardiac repolarization effects.
What to do
Check baseline ECG and electrolytes, correcting potassium and magnesium before anesthesia. Titrate sevoflurane to effect and monitor ECG and blood pressure perioperatively.
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 Sevoflurane
Frequently asked questions
Can I take Sevoflurane with Trifluoperazine?
MediHelp rates the interaction as moderate. Sevoflurane 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 can potentiate the sedative and hypotensive effects of sevoflurane. Both agents can also prolong the QT interval, so arrhythmia risk may rise in susceptible patients.
How serious is the interaction between Sevoflurane 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: Check baseline ECG and electrolytes, correcting potassium and magnesium before anesthesia. Titrate sevoflurane to effect and monitor ECG and blood pressure perioperatively.
What other medicines interact with Sevoflurane?
MediHelp also lists interactions of Sevoflurane with, for example, Amiodarone, Amisulpride, Arsenic trioxide. The full list is on the Sevoflurane page.
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