Maltitol is a sugar alcohol (a polyol) used as a sugar substitute.It has 75–90% of the sweetness of sucrose (table sugar) and nearly identical properties, except for browning.t is used to replace table sugar because it is half as caloric, does not promote tooth decay, and has a somewhat lesser effect on blood glucose. In chemical terms, maltitol is known as 4-O-α-glucopyranosyl-D-sorbitol. It is used in commercial products under trade names such as Lesys, Maltisweet and SweetPearl.