this is my friends situation. hes been working out for pretty much 4years now and all that time hes been using whey protein with no problems. but in the last five months or so hes been getting bad reactions after using whey.
just today hes tired isopure and he had to go throw up. he says milk doesnt bother him. hes been using casien with no problems. doesnt want to use soy.
im going to do a google on it right now. but does anybody have any insight on my friends problem? thanks.