It turns out that with protein shakes, in any case, you should be careful. Unlike harmless milkshakes (which, by the way, can also be called protein shakes), protein powders are not tested as drugs, although experts should note that they should be done. Thus, you can not always be 100% sure what they contain.
In a WebMD interview, Purdue University professor Wayne Campbell notes that he is not so much bothered by protein and its amount in such cocktails as its other components. ôSome