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. 2009 Mar 23;2:45–60. doi: 10.4137/ijtr.s2129

Table 2.

Amino acid compositions of 50 g and 100 g L-tryptophan depletion and loading formulations.

L-tryptophan Formulation 50 g 100 g
L-tryptophan Depletion 0.00 0.00
*°L-tryptophan Loading 5.15 10.30
15 Amino Acids
L-alanine 2.75 5.50
L-arginine 2.45 4.90
*L-cysteine 1.35 2.70
Glycine hydromonochloride 1.60 3.20
*L-histidine 1.60 3.20
*°L-isoleucine 4.00 8.00
*°L-leucine 6.75 13.50
°L-lysine 4.45 8.90
*°L-methionine 1.50 3.00
*°L-phenylalanine 2.85 5.70
L-proline 6.10 12.20
L-serine 3.45 6.90
*°L-threonine 3.25 6.50
*°L-tyrosine 3.45 6.90
*°L-valine 4.45 8.90
Depletion, total grams 50.00 100.00
Loading, total grams 55.15 110.30
*

Competing amino acids (CAA);

CAAs typically summed for calculating the tryptophan/CAA ratio;

°

Essential amino acids.