1,5-Anhydro-D-sorbitol, a cyclic polyol, is a metabolic product of 1,5 anhydro-D-fructose. 1,5-Anhydro-D-sorbitol is used as a reference in analytical procedures that assess the metabolism of 1,5 anhydro-D-fructose, a food supplement with potential benefits as an antioxidant, antimicrobial, and antidiabetic agent.