Proteinex-18 Liquid is a predigested high-protein (18 grams per oz.) source, which means that the product is already broken down into its amino acid portions that the body can easily absorb and utilize. Proteinex-18 provides 18 grams of highly absorbable protein per ounce. Proteinex-18 is ready to use, no mixing is required, or you can mix with your favorite beverage or with foods such as apple sauce or Jell-O. Approximate percentage Amino Acid breakdown per 100g: L-Arginine 1440mg L-Histidine 132mg L-Isoleucine 240mg L-Leucine 540mg L-Lysine 780mg L-Methionine 132mg L-Phenylalanine 420mg L-Threonine 360mg L-Tryptophan 0mg Percent dissolved Collagen in Proteinex-18 Liquid: 54 to 59%