adorable baby smiling with joy

Peds Calc

Pediatric Reference

Ondansetron Side EffectsComprehensive Pediatric Safety Guide

Ondansetron is usually well tolerated in children, and most side effects are mild and temporary. Common effects include headache or constipation. Serious rhythm problems are uncommon but require caution in children with certain heart conditions or other QT‑prolonging medicines.

0 Categories
0 Clinical Sources
Evidence-Based
Back to Ondansetron Overview

Essential Information

1

Headache—usually mild; offer rest and fluids

2

Constipation or (less commonly) diarrhea—encourage fluids; gentle fiber as tolerated

3

Fatigue—typically short‑lived as illness improves

4

Rare

heart rhythm changes (QT prolongation) in at‑risk children—seek care if fainting, palpitations, or severe dizziness

Clinical Overview

Parent‑friendly monitoring focuses on hydration, comfort, and awareness of rare cardiac risks.

Parent Communication Guide

Age-Appropriate Explanations

Infants (0-12 months)

Information coming soon

Toddlers (1-3 years)

Information coming soon

Children (4-12 years)

Information coming soon

Adolescents (13+ years)

Information coming soon

Common Parent Concerns

Frequently Asked Questions

Parent and clinician concerns about Ondansetron