Metabolic 3232 A Protein Hydrolysate Powder, 1 lb. Can, 2270 cal, Unflavored. 3232 A is a protein hydrolysate base powder that is to be used with added carbohydrate. It contains tapioca starch. It is for use in the dietary management of infants and children with disaccharidase deficiencies or other disorders of carbohydrate metabolism under the direct and continuing supervision of a doctor.