Augmentin with kidney impairment: dosing and safety
Kidney function affects how the body clears Augmentin (Amoxicillin/Clavulanate) and many of its metabolites. For people with chronic kidney disease, dialysis, or even mild renal impairment from age or comorbidities, the standard 500/125mg, 875/125mg, 1000/62.5mg dose may need adjustment. This page summarises the practical principles for Augmentin in renal impairment.
Why renal function matters for Augmentin
A meaningful fraction of Amoxicillin, Clavulanate or its active metabolites is cleared by the kidneys for many medications. Reduced eGFR slows clearance, raises plasma concentrations and prolongs effect. Amoxicillin inhibits bacterial cell wall synthesis by binding to penicillin-binding proteins (PBPs), but is hydrolysed by beta-lactamase enzymes produced by some resistant bacteria. The prescribing information for Amoxicillin, Clavulanate usually specifies dose adjustments by eGFR threshold (e.g. 30–60 vs <30 mL/min/1.73m²).
Practical guidance
According to the prescribing information, baseline kidney function should be checked before starting Augmentin and periodically during treatment. People on dialysis need specialist input on dose timing relative to dialysis. Acute kidney injury — from dehydration, infection or other medications — can shift Augmentin effects unpredictably and may warrant a temporary hold at 500/125mg, 875/125mg, 1000/62.5mg.
Frequently asked questions
Is Augmentin safe with kidney problems? ▾
Mild to moderate kidney impairment usually allows Augmentin at adjusted lower 500/125mg, 875/125mg, 1000/62.5mg doses with monitoring. Severe impairment (eGFR <30) often requires substantial reduction or alternative therapy. The prescriber decides based on lab results and the indication.
Do I need lab tests on Augmentin if I have kidney disease? ▾
Yes — periodic eGFR and electrolyte monitoring is the standard practice for Augmentin in chronic kidney disease. Frequency depends on the severity of impairment and on Amoxicillin, Clavulanate-specific risks. The prescriber sets the schedule.
More on Augmentin
- With alcoholAugmentin and alcohol — is it safe to drink?
- With foodShould Augmentin be taken with food?
- Side effectsAugmentin side effects: common, rare and warning signs
- Dosage guideAugmentin dosage guide: how much to take and when
- OnsetHow fast does Augmentin start working?
- DurationHow long does Augmentin last?
The information on this website is provided for reference and educational purposes only. It does not replace consultation with a qualified healthcare professional.