Drug interactions
Isoproterenol + Methoxyflurane
Severity: Major
Isoproterenol and Methoxyflurane: major 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
Halogenated anaesthetics such as methoxyflurane can sensitise the myocardium to catecholamines. Combined with isoproterenol this raises the risk of ventricular arrhythmias.
What this interaction means in plain words
Isoproterenol and Methoxyflurane 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
Anaesthetic-induced myocardial sensitisation to catecholamines, enhancing beta-agonist arrhythmogenicity.
What to do
Avoid isoproterenol with methoxyflurane where possible. If it is needed, use the lowest effective dose with continuous ECG monitoring.
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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Other interactions of Isoproterenol
Frequently asked questions
Can I take Isoproterenol with Methoxyflurane?
MediHelp rates the interaction as major. Isoproterenol and Methoxyflurane 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. Halogenated anaesthetics such as methoxyflurane can sensitise the myocardium to catecholamines. Combined with isoproterenol this raises the risk of ventricular arrhythmias.
How serious is the interaction between Isoproterenol and Methoxyflurane?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid isoproterenol with methoxyflurane where possible. If it is needed, use the lowest effective dose with continuous ECG monitoring.
What other medicines interact with Isoproterenol?
MediHelp also lists interactions of Isoproterenol with, for example, Adrenaline-articaine, Bisoprolol, Budesonide-formoterol. The full list is on the Isoproterenol page.
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