Drug interactions
Lofexidine + Sevoflurane
Severity: Moderate
Lofexidine and Sevoflurane: 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
Lofexidine can prolong the QT interval and cause bradycardia and hypotension. Sevoflurane adds to QT and hemodynamic effects, so arrhythmia and marked hypotension are more likely.
What this interaction means in plain words
Lofexidine and Sevoflurane 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.
Lofexidine belongs to Central Nervous System; Sevoflurane belongs to Central Nervous System.
Why it happens
Additive QT prolongation plus additive hypotensive and bradycardic effects from central alpha-2 agonism and anesthetic vasodilation.
What to do
Check the baseline ECG and correct electrolytes before surgery. Monitor the ECG, heart rate and blood pressure throughout anesthesia.
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
Other interactions of Lofexidine
- Adagrasib + Lofexidine Major
- Alfuzosin + Lofexidine Major
- Amiodarone + Lofexidine Major
- Amisulpride + Lofexidine Major
- Anagrelide + Lofexidine Major
- Apomorphine + Lofexidine Major
Frequently asked questions
Can I take Lofexidine with Sevoflurane?
MediHelp rates the interaction as moderate. Lofexidine and Sevoflurane 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. Lofexidine can prolong the QT interval and cause bradycardia and hypotension. Sevoflurane adds to QT and hemodynamic effects, so arrhythmia and marked hypotension are more likely.
How serious is the interaction between Lofexidine and Sevoflurane?
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 the baseline ECG and correct electrolytes before surgery. Monitor the ECG, heart rate and blood pressure throughout anesthesia.
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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