FODMAP food guide
Is lasagna low FODMAP?
FODMAP score
80
High FODMAP
No — Lasagna is high FODMAP and is a common trigger for IBS symptoms in typical servings.
Low-FODMAP serving
Small portion with GF sheets, onion/garlic-free sauce, lactose-free bechamel
Becomes high FODMAP at
Standard serving
Wheat pasta sheets (Fructans), onion-garlic tomato sauce (Fructans) and a milk-based bechamel (Lactose) all combine.
Seen a different rating somewhere else?+
Usually it's a portion difference, not a disagreement. This page scores lasagna at a serving of Small portion with GF sheets, onion/garlic-free sauce, lactose-free bechamel; at Standard serving it belongs in the high band. A source quoting the larger serve will call it high, and one quoting the smaller will call it low — the same food, measured at two different amounts.
Based on published FODMAP research and reviewed reference data. Informational only — not medical advice. Tolerance is individual; verify with a dietitian during the elimination phase.
Go deeper
Related foods — gentlest first
Green scores are the real swaps; matching numbers are just relatives, not alternatives.