Per L Nutriflex Peri Upper chamber (400 mL): Isoleucine 2.34 g, leucine 3.13 g, lysine HCl 2.84 g (lysine 2.27 g), methionine 1.96 g, phenylalanine 3.51 g, threonine 1.82 g, tryptophan 0.57 g, valine 2.6 g, arginine monoglutamate 4.98 g (arginine 2.7 g, glutamic acid 2.28 g), histidine HCl monohydrate 1.69 g (histidine 1.25 g), alanine 4.85 g, aspartic acid 1.5 g, glutamic acid 1.22 g, glycine 1.65 g, proline 3.4 g, serine 3 g, Mg acetate tetrahydrate 0.86 g, Na acetate trihydrate 1.56 g, K dihydrogen phosphate 0.78 g, K hydroxide 0.52 g, Na hydroxide 0.5 g. Lower chamber (600 mL): Glucose monohydrate 88 g (glucose 80 g), NaCl 0.17 g, Ca chloride dihydrate 0.37 g. Electrolyte: Na 27 mmol, K 15 mmol, Mg 4 mmol, phosphate 5.7 mmol, acetate 19.5 mmol, Cl 31.6 mmol, Ca 2.5 mmol. Amino acid 40 g, nitrogen 5.7 g, carbohydrate 80 g. Total energy: 480 kCal. Per L Nutriflex Plus Upper chamber (400 mL): Isoleucine 2.82 g, leucine 3.76 g, lysine HCl 3.41 g (lysine 2.73 g), methionine 2.35 g, phenylalanine 4.21 g, threonine 2.18 g, tryptophan 0.68 g, valine 3.12 g, arginine monoglutamate 5.98 g (arginine 3.24 g, glutamic acid 2.74 g), histidine HCl monohydrate 2.03 g (histidine 1.5 g), alanine 5.82 g, aspartic acid 1.8 g, glutamic acid 1.47 g, glycine 1.98 g, proline 4.08 g, serine 3.6 g, Mg acetate tetrahydrate 1.23 g, Na acetate trihydrate 1.56 g, Na dihydrogen phosphate dihydrate 3.12 g, K hydroxide 1.4 g, Na hydroxide 0.23 g. Lower chamber (600 mL): Glucose monohydrate 165 g (glucose 150 g), Ca chloride dihydrate 0.53 g. Electrolyte: Na 37.2 mmol, K 25 mmol, Mg 5.7 mmol, phosphate 20 mmol, acetate 22.9 mmol, Cl 35.5 mmol, Ca 3.6 mmol. Amino acid 48 g, nitrogen 6.8 g, carbohydrate 150 g. Total energy: 792 kCal