40g of Pure Whey Protein Isolate Whey Iso Burst is an excellent source of protein and essential amino acids for the maintenance of good health. Pro Performance Quality Whey Iso Burst contains 40 grams of protein per does derived from Cross Flow Microfiltered (CFM) Whey Protein Isolate. This process results in a product that provides an excellent source of dietary protein, which assists in the building and repair of body tissues. This great-tasting formula is fully instantized and mixes easily into a delicious-tasting, protein-packed shake or smoothie. It also contains a balanced array of naturally occurring whey protein microfractions and has an exceptional protein efficiency ratio.