Premium cold micro-ultra filtration. Mixes instantly. Ultimate Nutrition's ProStar Whey contains only naturally occurring amino acids from 100% premium whey protein. Contains no soy, wheat or casein. 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 Pro-Star Whey is isolated by a complex low temperature processing system that utilizes a proprietary blend and ultrafiltration process for the highest quality premium isolated whey protein available. Ultimate Nutrition incorporates the highest quality standards in sourcing raw materials, manufacturing and packaging to insure you the customer, the finest supplements available.