What is Impact Whey Protein? Premium whey packed with 21g of protein per serving, for the everyday protein you need from a quality source. And where does this whey come from? The same cows that produce your milk and cheese — simply filtered, evaporated, and spray-dried to produce all-natural nutritionals. Ranked Grade A by independent tester Labdoor for both quality and value, Impact Whey Protein is officially certified as one of the best protein powders on the market.