Oat flour

Moderate FODMAP (Caution)Safe to about 3/4 cup (100g)

Is oat flour low FODMAP?

Oat flour is moderate FODMAP, safe in limited portions (Safe to about 3/4 cup (100g)).

Commercial oat flour is low FODMAP up to about 3/4 cup and climbs into fructans just past it. If you grind your own from rolled oats, start with a smaller amount, since homemade is less predictable.

FODMAP subgroups to watch

Oat flour contains fructans that can drive SIBO symptoms.

Portion threshold

Fructans climb above ~120g. Single typical servings stay in the rated range; larger servings push past the threshold.

Low-FODMAP grains and starches to try instead

White riceLow FODMAP Brown riceLow FODMAP Rolled oatsLow FODMAP Steel-cut oatsLow FODMAP QuinoaLow FODMAP BuckwheatLow FODMAP

A single food is only half the story. Eating oat flour 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.