it included a ) essential amino acids ( i.e . histidine , lysine , threonine , tryptophan ) , b ) arginine ( 1,000 mg/d ) , c ) alphaketoisovaleric 500 mg/d , alpha-ketoisocaproic ( 500 mg/d ) , alphaketobetamethylvaleric ( 500 mg/d ) , alphaketogammamethylthiobutyric ( 200 mg/d ) , betaphenylpyruvic ( 400 mg/d ) acids .
C0002525
essential amino acids
C0040005
threonine