Is a phenylalanine-free powdered medical food containing a balanced mix of essential and non-essential amino acids, carbohydrates, vitamins, minerals, and trace elements. It is specifically formulated for older children (typically age 8+), adolescents, and adults with proven PKU. The Orange flavor helps mask the natural taste of amino acids, making it easier to maintain dietary compliance. This product is designed to be a primary source of protein equivalent in a restricted PKU diet.