Cassia gum

Cassia gum is notable for FODMAPs and oligosaccharides. Clear on lactose, histamine, gluten, fructose, sorbitol, sucrose, tyramine, salicylate, nickel and oxalates.

Yes — Cassia gum is high in FODMAPs. Cassia gum is a galactomannan from cassia seed, and if you have learned that FODMAPs are short-chain carbohydrates this level will look wrong. It is not: the criterion that matters is whether gut bacteria ferment it, not how long the chain is. Inulin runs to sixty sugar units and is still a FODMAP. These gums ferment, which is exactly why they thicken in the gut and produce gas. The criterion is fermentability rather than chain length, and that is Gibson and Shepherd's definition: a long chain that ferments slowly is not the problem; a short one that ferments fast in the proximal colon is.

Yes — Cassia gum is high in oligosaccharides. Cassia gum is a galactomannan from a legume seed - the same plant family as the pulses that dominate this axis, and the same galactose-based chemistry. It is used in small quantities, which is what keeps a fermentable galactan from being worse. Amounts vary by brand and recipe, so always check the label of the exact product.