Drug interactions
Dexamethasone-tobramycin + Mannitol
Severity: Major
Dexamethasone-tobramycin and Mannitol: 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
Osmotic diuretics such as mannitol combined with systemic aminoglycosides like tobramycin raise the risk of nephrotoxicity and ototoxicity. Mannitol itself can cause renal injury and fluid shifts. The risk applies to systemic tobramycin, not to topical ophthalmic use.
What this interaction means in plain words
Dexamethasone-tobramycin and Mannitol 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.
Dexamethasone-tobramycin belongs to Anti Bacterial; Mannitol belongs to Cardiovascular.
Why it happens
Additive nephrotoxicity and diuretic-related volume depletion increase aminoglycoside accumulation and toxicity.
What to do
Avoid the combination with systemic tobramycin where possible; if necessary, monitor serum creatinine, tobramycin levels, hydration and hearing.
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?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Dexamethasone-tobramycin and Mannitol, the additional notes, the evidence detail and the whole-prescription interaction checker.
- Full clinical management advice
- Additional notes
- Evidence detail
- Interaction checker for a whole prescription
Try Pro+ free for 14 days on the web. No card needed.
Other interactions of Dexamethasone-tobramycin
Other interactions of Mannitol
Frequently asked questions
Can I take Dexamethasone-tobramycin with Mannitol?
MediHelp rates the interaction as major. Dexamethasone-tobramycin and Mannitol 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. Osmotic diuretics such as mannitol combined with systemic aminoglycosides like tobramycin raise the risk of nephrotoxicity and ototoxicity. Mannitol itself can cause renal injury and fluid shifts. The risk applies to systemic tobramycin, not to topical ophthalmic use.
How serious is the interaction between Dexamethasone-tobramycin and Mannitol?
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 with systemic tobramycin where possible; if necessary, monitor serum creatinine, tobramycin levels, hydration and hearing.
What other medicines interact with Dexamethasone-tobramycin?
MediHelp also lists interactions of Dexamethasone-tobramycin with, for example, Capreomycin, Carboplatin, Ciprofloxacin. The full list is on the Dexamethasone-tobramycin page.
Full monographs, dosing and an interaction checker in the MediHelp app
Open the complete reference, check multi-drug interactions and use dosing tools in the MediHelp app.
