Drug interactions
Midazolam intranasal + Sevoflurane
Severity: Major
Midazolam intranasal and Sevoflurane: major interaction.
Last updated Sources: US FDA label
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
Midazolam and sevoflurane both enhance GABA-mediated inhibition and produce additive sedation and respiratory depression. The combination can cause hypoventilation, airway obstruction, desaturation, apnea and prolonged recovery.
What this interaction means in plain words
Midazolam intranasal and Sevoflurane can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Why it happens
Additive GABA-A receptor potentiation causing synergistic CNS and respiratory depression.
What to do
Reduce the sevoflurane requirement and titrate to effect with continuous pulse oximetry and capnography. Ensure airway management and resuscitation equipment are available.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
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References
Other interactions of Sevoflurane
Frequently asked questions
Can I take Midazolam intranasal with Sevoflurane?
MediHelp rates the interaction as major. Midazolam intranasal and Sevoflurane can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Midazolam and sevoflurane both enhance GABA-mediated inhibition and produce additive sedation and respiratory depression. The combination can cause hypoventilation, airway obstruction, desaturation, apnea and prolonged recovery.
How serious is the interaction between Midazolam intranasal and Sevoflurane?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Reduce the sevoflurane requirement and titrate to effect with continuous pulse oximetry and capnography. Ensure airway management and resuscitation equipment are available.
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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