XLS Medical Fat Binder contains litramine, a unique substance based on vegetable fibres and enriched with the fatsoluble vitamins A, D and EXLS Medical Fat Binder with vitamins binds up to 27 % of dietary fats in the stomach by absorbing the fat molecules to form a fat-fibre complex. It ensures optimum fat binding in the first phase and, in the second phase, fat-soluble vitamins are released into the body to ensure optimum vitamin absorption.