40g of Pure Whey Protein Isolate Pro Performance Quality Whey Iso Burst contains 40 grams of protein per dose 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.