Patent ID: 8252596

Claim:
A method for treating a subject suffering from phenylketonuria or phenylalanemia, said method comprising: enterally administering to the subject a composition comprising a mixture of amino acids selected from leucine (Leu), lysine (Lys), tyrosine (Tyr), tryptophan (Trp), methionine (Met), isoleucine (Ile), valine (Val), histidine (His), arginine (Arg), and threonine (Thr), where the amount of Leu in said mixture is at least 16% by weight of the selected amino acids; and the amount of Lys in said mixture is 2 to 4% by weight of the selected amino acids; and b) inhibiting Phe transport from the gastrointestinal tract into the blood by said administering, thereby treating the subject's phenylketonuria or phenylalanemia.