SIBO daily guide
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Onion, white

High FODMAP (Avoid)High in fructans, even tiny amounts

Is onion, white low FODMAP?

Onion, white is high FODMAP and best avoided during the elimination phase.

The most universal FODMAP trigger. Hidden in stocks, sauces, dressings, sausages. Read labels carefully and ask servers explicitly.

FODMAP subgroups to watch

Onion, white contains fructans that can drive SIBO symptoms.

SIBO note

Watch this one for Hydrogen sulfide SIBO (ISO). Onion, white contains sulfur compounds, and hydrogen sulfide (ISO) patterns can be more sensitive to these, especially in larger servings.

Low-FODMAP vegetables to try instead

CarrotLow FODMAPBaby spinachLow FODMAPCucumberLow FODMAPLettuceLow FODMAPArugulaLow FODMAPTomatoLow FODMAP

A single food is only half the story. Eating onion, white in a bigger meal? See how it stacks with the rest of your plate.

FODMAP thresholds follow the Monash University Low FODMAP Diet research. Tolerance is individual. Unsibo is a wellness companion; it is not a medical device and does not diagnose, treat, or prevent any condition.