Ondansetron — paediatric dose
Weight-based dosing for Ondansetron in children. Category: GI.
| Dose | 0.1–0.15 mg/kg (max 8 mg) |
|---|---|
| Per kg | 0.1–0.15 mg/kg |
| Maximum | 8 mg |
| Route | IV/PO |
| Frequency | 8H prn |
Clinical notes
QT prolongation at higher doses.
Common questions
What is the dose of Ondansetron in children?
0.1–0.15 mg/kg (max 8 mg). That is 0.1–0.15 mg/kg per dose.
What is the maximum Ondansetron dose for a child?
The maximum single dose is 8 mg. Weight-based calculation should never exceed this ceiling.
How is Ondansetron given?
Ondansetron is given by IV/PO, 8H prn.
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.