Skip to content

Drug interactions

Cefalexin + Plazomicin

Severity: Moderate

Cefalexin and Plazomicin: moderate 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

Plazomicin is an aminoglycoside with labeled risks of nephrotoxicity and ototoxicity. Other agents that can impair renal function, including cephalosporins in some reports, may add to kidney injury and raise plazomicin exposure.

What this interaction means in plain words

Cefalexin and Plazomicin can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.

Cefalexin belongs to Anti Bacterial; Plazomicin belongs to Anti Bacterial.

Evidence level: Low

Why it happens

Additive nephrotoxic potential, with reduced renal clearance increasing aminoglycoside accumulation and ototoxicity.

What to do

Monitor serum creatinine and plazomicin concentrations, and adjust dosing to renal function per labeling. Watch for hearing loss, tinnitus or vestibular symptoms.

What to ask your pharmacist

  • Should I take them at different times of day?
  • Does the dose of either medicine need to change?
  • Is there anything I should avoid, such as alcohol or certain foods, while on both?

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

Pro+ members

Unlock the full page

Create an account and start a Pro+ trial to unlock the full management advice for Cefalexin and Plazomicin, 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.

Frequently asked questions

Can I take Cefalexin with Plazomicin?

MediHelp rates the interaction as moderate. Cefalexin and Plazomicin can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Plazomicin is an aminoglycoside with labeled risks of nephrotoxicity and ototoxicity. Other agents that can impair renal function, including cephalosporins in some reports, may add to kidney injury and raise plazomicin exposure.

How serious is the interaction between Cefalexin and Plazomicin?

MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor serum creatinine and plazomicin concentrations, and adjust dosing to renal function per labeling. Watch for hearing loss, tinnitus or vestibular symptoms.

What other medicines interact with Cefalexin?

MediHelp also lists interactions of Cefalexin with, for example, Amikacin, Avelumab, Balstilimab. The full list is on the Cefalexin 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.

Browse A–Z · Drug interactions

Get the app Sign in