Guar gum

What this is

Guar gum is a high-molecular-weight galactomannan: humans do not digest it like starch, but gut bacteria can ferment it, which is why larger intakes may cause gas or bloating. U.S. FDA regulations allow it in specified food categories with maximum use levels, and JECFA lists an ADI "not specified"; EFSA's 2017 re-evaluation found no need for a numerical ADI and no safety concern for the general population at reported food-additive uses. The clearest consumer-facing concern is gastrointestinal tolerance, especially when amounts are far above typical additive use or when dry, concentrated gum products are swallowed without enough liquid and swell before reaching the stomach. A newer EFSA infant-focused review found submitted data insufficient to demonstrate safety in infant formula and infant/special-medical-food categories; the EU therefore withdrew or sunset E412 authorization in those narrow categories and tightened contaminant/microbiological specifications. That action is a subgroup/data-gap policy signal, not proof of broad human harm from ordinary food or restaurant use.

Safety Review

The key endpoints PRūF reviews in safety assessments. This is not a prediction of harm.

At typical restaurant ingredient levels, guar gum is best understood as a limited, exposure-context concern. Regulators have not identified a strong general-population toxicology signal at reported food-additive uses, but guar gum swells strongly in water and can be fermented by gut bacteria. High supplemental or concentrated intakes can cause gas, bloating, cramps, diarrhea, or obstruction if swallowed dry without enough fluid. EFSA also found the infant-formula data package insufficient for several narrow infant categories, leading the EU to revoke or sunset those E412 uses and tighten specifications.

No safety review endpoints are listed for this ingredient yet.