Osmolality of enteral formulas for maternal phenylketonuria

Osmolalities of individual products and composite diets used in the treatment of maternal phenylketonuria were measured. Mathematical equations were developed which predict osmolality. Quantitative information on osmolalities of enteral formulas for women with maternal phenylketonuria may help clinicians plan diets to avoid the risk of gastrointestinal disturbances and to increase acceptability.