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Drug interactions

Oxaliplatin + Tobramycin

Severity: Major

Oxaliplatin and Tobramycin: 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

Both drugs can injure the kidney, and aminoglycosides also damage the inner ear. Giving them together can increase the risk of renal impairment and ototoxicity, and renal impairment further raises tobramycin exposure.

What this interaction means in plain words

Oxaliplatin and Tobramycin 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.

Oxaliplatin belongs to Oncology; Tobramycin belongs to Anti Bacterial.

Evidence level: Moderate

Why it happens

Additive nephrotoxicity and ototoxicity from tubular and cochlear/vestibular cell injury.

What to do

Avoid the combination if an alternative antibiotic exists. Otherwise monitor serum creatinine and tobramycin trough levels and watch for hearing or balance changes.

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?

Bring a full list of your medicines, including over-the-counter products, supplements and herbal remedies, to every pharmacy visit.

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Frequently asked questions

Can I take Oxaliplatin with Tobramycin?

MediHelp rates the interaction as major. Oxaliplatin and Tobramycin 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. Both drugs can injure the kidney, and aminoglycosides also damage the inner ear. Giving them together can increase the risk of renal impairment and ototoxicity, and renal impairment further raises tobramycin exposure.

How serious is the interaction between Oxaliplatin and Tobramycin?

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 the combination if an alternative antibiotic exists. Otherwise monitor serum creatinine and tobramycin trough levels and watch for hearing or balance changes.

What other medicines interact with Tobramycin?

MediHelp also lists interactions of Tobramycin with, for example, Cidofovir, Adefovir, Amikacin. The full list is on the Tobramycin page.

Full monographs, dosing and an interaction checker in the MediHelp app

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