Is Nephrotoxic Antibiotics (Gentamicin/Tobramycin) Safe with Creatine?
Free · No account · based on published sources including NIH ODS, FDA drug labels, and peer-reviewed literature
Discontinue creatine supplementation immediately if prescribed aminoglycoside antibiotics. Maintain excellent hydration. Renal function (creatinine, BUN, eGFR) must be monitored every 48-72 hours during antibiotic therapy. Do not resume creatine until antibiotic course is complete and renal function is confirmed normal.
Why this interaction occurs
Aminoglycoside antibiotics are directly nephrotoxic, accumulating in proximal tubular cells and causing oxidative damage, reducing GFR in up to 20% of patients. Creatine supplementation independently elevates serum creatinine (through increased creatine-to-creatinine conversion) and may increase renal metabolic demand. The combination can mask early aminoglycoside nephrotoxicity through baseline creatinine elevation while simultaneously amplifying actual renal tubular damage, delaying recognition and intervention.
Evidence
Evidence level: moderate.
Reported safety data
The FDA’s adverse event reporting system (FAERS) has received 1,051 reports mentioning Creatine. This reflects reported cases involving the medication in general — not confirmed causation, and not specific to the Creatine + supplement combination on this page.
FAERS reports are voluntary and cannot prove that a drug caused an event. Do not use report counts to assess the safety of this specific drug-supplement pair.
Frequently asked questions
Related interactions
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Educational only — not medical advice.
Always confirm with your doctor or pharmacist.