Carboxymethylated beta-glucan is a derivative of beta-glucan, a soluble fiber present in the cell walls of various organisms like bacteria, fungi, yeasts, algae, lichens, oats, and barley. Carboxymethylation entails introducing carboxymethyl groups to the beta-glucan structure. Although research on carboxymethylated beta-glucan is relatively scarce, general benefits linked with beta-glucans and potential advantages of this modified form are noteworthy.