PediRounds

Flucloxacillin — paediatric dose

Weight-based dosing for Flucloxacillin in children. Category: Antibiotic.

Dose25–50 mg/kg 6H
Per kg25–50 mg/kg
Maximum2000 mg
RouteIV
Frequency6H

Clinical notes

Anti-staphylococcal.

Common questions

What is the dose of Flucloxacillin in children?

25–50 mg/kg 6H. That is 25–50 mg/kg per dose.

What is the maximum Flucloxacillin dose for a child?

The maximum single dose is 2000 mg. Weight-based calculation should never exceed this ceiling.

How is Flucloxacillin given?

Flucloxacillin is given by IV, 6H.

About this page

Compiled from standard paediatric references. Verify against a current formulary and your local protocol.

Spotted something wrong? Report an error on this page — corrections from clinicians are welcome and are reviewed before any change is published.

Last reviewed 2026-08-12.