Generally SafeFDA B

Is Ondansetron Safe During Pregnancy?

Ondansetron is commonly used for severe morning sickness when other treatments fail.

Last reviewed: April 2026

Safety Summary

Ondansetron is commonly used for severe morning sickness when other treatments fail.

Category B — Likely Safe

Animal studies show no risk, but limited human data available.

Trimester-by-Trimester Guide

1st Trimester (Weeks 1–12)

Use only if severe nausea. Some concerns about first trimester use — discuss with doctor.

2nd Trimester (Weeks 13–26)

Considered safer. Used for hyperemesis.

3rd Trimester (Weeks 27–40)

Safe when needed.

Brands Available in India

EmesetOndemVomikind

Safer Alternatives During Pregnancy

Your doctor may suggest one of these alternatives. Always confirm with your obstetrician.

Doxylamine + Vitamin B6 Ginger tea Small frequent meals

Frequently Asked Questions

Ask GoDavaii AI About Medicine Safety in Pregnancy

Get personalised guidance on medicine safety during pregnancy in 22+ Indian languages — free, instant, and verified by 3 AI models.

Ask GoDavaii AI

Medical Disclaimer: Pregnancy safety information is based on available clinical data and FDA classifications. This page is for educational purposes only and does not substitute professional medical advice. Every pregnancy is different — consult your doctor or gynaecologist before taking any medicine. Drug safety classifications may have been updated; always verify current guidelines.