Drug interactions
Doxycycline + Methoxyflurane
Severity: Major
Doxycycline 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
Methoxyflurane is nephrotoxic through fluoride release, and tetracyclines have been linked to fatal renal toxicity when used with it. Doxycycline is less renally harmful than other tetracyclines, but the labeling advises against the combination.
What this interaction means in plain words
Doxycycline 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
Additive nephrotoxicity; tetracycline antianabolic effects and methoxyflurane fluoride-induced tubular injury.
What to do
Avoid methoxyflurane in patients taking tetracyclines, including doxycycline, where alternatives exist. If unavoidable, use the lowest dose and monitor renal function.
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 Doxycycline
- Acitretin + Doxycycline Contraindicated
- Aminolevulinic acid + Doxycycline Major
- Cholera vaccine + Doxycycline Major
- Doxycycline + Isotretinoin Major
- Doxycycline + Microbiota Major
- Doxycycline + Palovarotene Major
Frequently asked questions
Can I take Doxycycline with Methoxyflurane?
MediHelp rates the interaction as major. Doxycycline 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. Methoxyflurane is nephrotoxic through fluoride release, and tetracyclines have been linked to fatal renal toxicity when used with it. Doxycycline is less renally harmful than other tetracyclines, but the labeling advises against the combination.
How serious is the interaction between Doxycycline 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 methoxyflurane in patients taking tetracyclines, including doxycycline, where alternatives exist. If unavoidable, use the lowest dose and monitor renal function.
What other medicines interact with Doxycycline?
MediHelp also lists interactions of Doxycycline with, for example, Acitretin, Aminolevulinic acid, Cholera vaccine. The full list is on the Doxycycline page.
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