Onion

Vegetables

High FODMAP

Overview

Onions are high in fructans and one of the most common IBS triggers. All varieties (white, red, brown, spring/green bulb) are high FODMAP.

Typical Serving

1/2 medium (75g)

Fructans

High

GOS

Low

Fructose

Moderate

The green tops of spring onions (scallions) are low FODMAP. Use them for an onion-like flavor.

green part of spring onionschivesonion-infused oil

Are spring onions low FODMAP?

The green part only. The white bulb is still high in fructans.

Is cooked onion lower in FODMAPs?

No. Cooking doesn't reduce fructan content.

Learn which foods are safe, get a sample meal plan, and start managing your IBS symptoms with confidence.