Drug interactions
Nitrous oxide + Sevoflurane
Severity: Minor
Nitrous oxide and Sevoflurane: 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
Nitrous oxide reduces the sevoflurane concentration needed for anesthesia. This is a routine and expected combination that may increase cardiovascular depression only modestly.
What this interaction means in plain words
Nitrous oxide and Sevoflurane have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Why it happens
Additive anesthetic potency, with reduced MAC of sevoflurane in the presence of nitrous oxide.
What to do
Adjust the sevoflurane concentration according to MAC and clinical response. Monitor end-tidal agent concentrations and hemodynamics.
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?
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Other interactions of Sevoflurane
Frequently asked questions
Can I take Nitrous oxide with Sevoflurane?
MediHelp rates the interaction as minor. Nitrous oxide and Sevoflurane have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Nitrous oxide reduces the sevoflurane concentration needed for anesthesia. This is a routine and expected combination that may increase cardiovascular depression only modestly.
How serious is the interaction between Nitrous oxide and Sevoflurane?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Adjust the sevoflurane concentration according to MAC and clinical response. Monitor end-tidal agent concentrations and hemodynamics.
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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