FODMAP food guide
Is oyster sauce low FODMAP?
FODMAP score
25
Low FODMAP
Yes — Oyster Sauce is low FODMAP in normal servings and is generally well tolerated by people with IBS.
FODMAPs present
Low-FODMAP serving
1 tbsp (21 g)
Becomes high FODMAP at
2+ tbsp (some brands add garlic or onion)
Generally low-FODMAP at 1 tbsp; check the label for added garlic or onion.
Seen a different rating somewhere else?+
Usually it's a portion difference, not a disagreement. This page scores oyster sauce at a serving of 1 tbsp (21 g); at 2+ tbsp (some brands add garlic or onion) 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.