Drug interactions
Dexamethasone-neomycin-polymyxin + Levofloxacin
Severity: Major
Dexamethasone-neomycin-polymyxin and Levofloxacin: 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
Fluoroquinolones and systemic corticosteroids together increase the risk of tendinitis and tendon rupture, particularly the Achilles tendon. Risk is higher in older patients and those on prolonged therapy.
What this interaction means in plain words
Dexamethasone-neomycin-polymyxin and Levofloxacin 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-neomycin-polymyxin belongs to Anti Bacterial; Levofloxacin belongs to Anti Bacterial.
Why it happens
Additive tendon toxicity from fluoroquinolone effects on tenocytes and corticosteroid-impaired collagen turnover.
What to do
Avoid the combination in older patients where alternatives exist. Stop levofloxacin at the first sign of tendon pain or inflammation and rest the limb.
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-neomycin-polymyxin and Levofloxacin, 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-neomycin-polymyxin
- Dexamethasone-neomycin-polymyxin + Ketorolac Major
- Dexamethasone-neomycin-polymyxin + Lapatinib Major
- Dexamethasone-neomycin-polymyxin + Mifepristone Major
- Dexamethasone-neomycin-polymyxin + Moxifloxacin Major
- Aldesleukin + Dexamethasone-neomycin-polymyxin Moderate
- Allogeneic cultured keratinocytes / fibroblasts in bovine collagen + Dexamethasone-neomycin-polymyxin Moderate
Other interactions of Levofloxacin
- Dronedarone + Levofloxacin Contraindicated
- Ibutilide + Levofloxacin Contraindicated
- Levofloxacin + Thioridazine Contraindicated
- Levofloxacin + Vandetanib Contraindicated
- Levofloxacin + Ziprasidone Contraindicated
- Adagrasib + Levofloxacin Major
Frequently asked questions
Can I take Dexamethasone-neomycin-polymyxin with Levofloxacin?
MediHelp rates the interaction as major. Dexamethasone-neomycin-polymyxin and Levofloxacin 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. Fluoroquinolones and systemic corticosteroids together increase the risk of tendinitis and tendon rupture, particularly the Achilles tendon. Risk is higher in older patients and those on prolonged therapy.
How serious is the interaction between Dexamethasone-neomycin-polymyxin and Levofloxacin?
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 in older patients where alternatives exist. Stop levofloxacin at the first sign of tendon pain or inflammation and rest the limb.
What other medicines interact with Dexamethasone-neomycin-polymyxin?
MediHelp also lists interactions of Dexamethasone-neomycin-polymyxin with, for example, Ketorolac, Lapatinib, Mifepristone. The full list is on the Dexamethasone-neomycin-polymyxin 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.
