Examples of commercial whey proteins include those available in most health food stores and supermarket health sections; they typically consist of isolate/concentrate or isolate/concentrate/hydrolysate mixtures and they are usually flavoured so they can be mixed with water or milk and consumed as a drink or shake. Bioactive whey proteins, typically unflavoured and with fewer or no additives, are significantly more expensive. - en.wikipedia.org
Whey Protein | Sources of Great Whey Protein |