Gen-Tec Nutrition's 100% Pure Whey Protein contains Hydrolysed WPI (fastest digesting Whey Peptides), Microfiltered WPI (fastest digesting Whey Protein), Instantised WPC (highest quality medium digesting Whey Protein) and Therapeutic Grade Colostrum (>35% IGG) to help aid digestion and immunity by improving gut/intestinal flora. Simply mix Pure Whey as suggested for the tastiest, most affordable and convenient way to create an anabolic environment conducive to building lean muscle mass.