Whey protein is the ultimate source of protein! It’s the highest quality of protein available. Whey protein is a rich source of branched chain amino acids (BCAAs), containing the highest known levels of any natural food source.
Whey protein is one of 2 types of protein that comes from milk (the other being casein protein). It’s made during the process of cow’s milk being turned into cheese. When the milk is being turned into cheese, the whey protein is a by-product.