Tobramycin and Torsemide interaction
Tobramycin and Torsemide: both prescribing labels flag this combination with the strongest language, such as a contraindication, a boxed warning, or an instruction to avoid it.
Do not combine without a prescriber's guidance. The label language below is the strongest FDA uses.
What the FDA labels say
From the Torsemide label · effective 2026-07-21
Avoid concomitant use of torsemide and aminoglycoside antibiotics, if possible.
Ototoxic Drugs Loop diuretics increase the ototoxic potential of other ototoxic drugs, including aminoglycoside antibiotics and ethacrynic acid.
Worsening of renal function can also occur with concomitant use of nephrotoxic drugs (e.g., aminoglycosides, cisplatin, and NSAIDs).
From the Tobramycin (TOBI Podhaler) label · effective 2026-04-15
Some diuretics can enhance aminoglycoside toxicity by altering antibiotic concentrations in serum and tissue.
Taking more than these two? Interactions stack. Check your whole list at once; it stays in your browser.
Open in the checkerNot medical advice. Interaction Checker quotes FDA label text and NIH fact sheets. Whether an interaction matters for you depends on doses, timing, kidney and liver function, and other conditions. Confirm with a pharmacist or prescriber.