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High FODMAP Vegetables

Is Onion High FODMAP?

No. Onion is high FODMAP, mainly from fructans.

Onion is high in fructans, chains of fructose units that ferment rapidly in the colon, making it a frequent IBS trigger even at small portions.

Fructans

Low-FODMAP Vegetables Alternatives

If you need to swap this out during the elimination phase, these are gentler choices in the same category:

Track Your Reaction in GutLedger

Tolerance varies between people. The only way to know how onion affects you is to log how you respond. GutLedger gives you private, on-device tracking with this same FODMAP database built in - no account needed.

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See how the GutLedger food and symptom diary works

Related Foods

ScallionHigh RadicchioHigh Garlic powderHigh ArtichokeHigh Spring onion (green part)Low RadishLow

See all 497 foods in the FODMAP checker or go back to the GutLedger home page.

More from Cyber-Jack: ListLedger (shared shopping lists), Mileage calculator (free HMRC mileage calculator), Shoji (calm puzzle game)
Not medical advice. General FODMAP guidance based on Monash-aligned public research. Individual tolerance varies; confirm any elimination diet with a registered dietitian.