Proteinex is a predigested liquid protein that provides 15 grams of protein, no fat, no sugar, no carbohydrates, no phosphorous and only 60 calories per 1 oz. serving. Proteinex Liquid is a predigested protein source, which means that the product is already broken down to its' amino acid portions that the body can easily absorb and utilize. Original flavored Proteinex is ready to use, no mixing is required, or you can mix with your favorite beverage or with foods such as applesauce or Jell-O. Approximate percentage Amino Acid breakdown per 100g: L-Arginine 1200mg L-Histidine 110mg L-Isoleucine 200mg L-Leucine 200mg L-Lysine 650mg L-Methionine 110mg L-Phenylalanine 350mg L-Threonine 300mg L-Valine 139mg L-Tryptophan 0mg