BullPharm Premium Whey Protein uses only 100% non-denatured whey protein with absolutely no acid-treated whey. We use a low-temperature cross-flow micro filtration process. Low-temperature processing protects the protein and keeps the protein fractions intact giving you the highest concentration of muscle-building amino acids. Our protein is manufactured in the USA in a USDA-licensed dairy plant with rigorous quality checks. Our whey is instantized and agglomerated for greater absorption and bio-availability.