PDelicious Chocolate Flavor Mixes Instantly. Premium Cold Micro-Ultra Filtration. Protein Supplement. Naturally and Artificially Flavored. Ultimate Nutrition's ProStar Whey contains only naturally occurring amino acids from 100% premium whey protein. Ultimate Nutrition's ProStar Whey contains all the whey protein fractions such as Beta Lactoglobulin, Alpha Lactalbumin, Glycomacropeptide, Immunoglobulins, Proteose Peptones, Serum Albumin, Lactoferrin and Lactoperoxidase. Ultimate Nutrition's ProStar Whey is isolated by a complex low temperature processing system that utilizes a proprietary micro and ultrafiltration process for the highest quality premium isolated whey protein available. Contains Milk, Soy.Typical Amino Acid Profile (each Serving Contains): Essential Amino Acids-L-Leucine (2937 mg), L-Isoleucine (1418 mg), L-Valine (1099 mg), L-Lysine (2436 mg), L-Threonine (960 mg), L-Methionine (471 mg), L-Phenylalanine (884 mg), L-Tryptophan (586 mg); Non-Essential Amino Acids-L-Arginine (419 mg), L-Aspartic Acid (2359 mg), L-Cystine/Cystein (847 mg), L-Alanine (1161 mg), L-Glutamic Acid (3879 mg), L-Glycine (434 mg), L-Histidine (471 mg), L-Proline (950 mg), L-Serine (899 mg), L-Tyrosine (790 mg).