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Calcium Carrageenan

Moderate concern

Carrageenan (including its calcium salt) is permitted as a food additive but has been associated with intestinal inflammation in some animal and in vitro studies; human evidence is mixed.

Found in

80 products

What it is

Calcium salt of carrageenan, a sulfated polysaccharide extracted from red seaweed (Rhodophyta).

Thickener, gelling agent, and stabilizer in dairy, dairy alternatives, and processed foods (E407 family).

Why it's flagged

possible gut inflammation
controversial in some review studies

What regulators actually say

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Regulatory status

United States — FDA

Permitted (21 CFR 172.620, carrageenan family)

European Union — EFSA

Authorized food additive E407, re-evaluated 2018

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