Drug interactions
Neomycin + Tobramycin inhaled
Severity: Major
Neomycin and Tobramycin inhaled: 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
Inhaled tobramycin gives some systemic exposure, and oral neomycin may be absorbed in renal impairment or damaged gut. Together they raise the risk of nephrotoxicity and ototoxicity from cumulative aminoglycoside load.
What this interaction means in plain words
Neomycin and Tobramycin inhaled 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 aminoglycoside toxicity to the kidney and cochleovestibular system.
What to do
Avoid concurrent use where possible. If needed, monitor renal function, tobramycin levels and hearing or vestibular symptoms.
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 Neomycin
- Amikacin + Neomycin Major
- Amphotericin b deoxycholate + Neomycin Major
- Capreomycin + Neomycin Major
- Cidofovir + Neomycin Major
- Colistin + Neomycin Major
- Ethacrynic acid + Neomycin Major
Frequently asked questions
Can I take Neomycin with Tobramycin inhaled?
MediHelp rates the interaction as major. Neomycin and Tobramycin inhaled 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. Inhaled tobramycin gives some systemic exposure, and oral neomycin may be absorbed in renal impairment or damaged gut. Together they raise the risk of nephrotoxicity and ototoxicity from cumulative aminoglycoside load.
How serious is the interaction between Neomycin and Tobramycin inhaled?
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 concurrent use where possible. If needed, monitor renal function, tobramycin levels and hearing or vestibular symptoms.
What other medicines interact with Neomycin?
MediHelp also lists interactions of Neomycin with, for example, Amikacin, Amphotericin b deoxycholate, Capreomycin. The full list is on the Neomycin page.
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