Drug interactions
gentamicin + vancomycin
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.
Overview
Concurrent use increases risk of nephrotoxicity and ototoxicity compared with either agent alone.
Mechanism of action
Additive renal tubular toxicity and ototoxic effects; pharmacodynamic interaction.
Clinical management
Avoid combination if alternatives exist. If required, use lowest effective doses, limit duration, monitor SCr/urine output and drug levels (vanco and gentamicin) frequently; adjust dosing or discontinue if AKI signs.
Drug reference
References
- Vancomycin Prescribing Information — FDA Label
- Vancomycin: Drug Interactions — Lexicomp
- Aminoglycosides: Dosing and adverse effects — UpToDate
Frequently asked questions
Can I take gentamicin with vancomycin?
The interaction is rated: Major. Concurrent use increases risk of nephrotoxicity and ototoxicity compared with either agent alone.
How serious is the interaction between gentamicin and vancomycin?
The interaction is rated: Major. Evidence level: High.
How is the interaction between gentamicin and vancomycin managed?
Avoid combination if alternatives exist. If required, use lowest effective doses, limit duration, monitor SCr/urine output and drug levels (vanco and gentamicin) frequently; adjust dosing or discontinue if AKI signs.
Why do gentamicin and vancomycin interact?
Additive renal tubular toxicity and ototoxic effects; pharmacodynamic interaction.
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