There are advantages to both whey protein isolate and whey protein concentrate, so of course our whey protein contains a balanced mixture of both. ‘Isolate’ is the highest concentration form with the greatest amount of amino acids per scoop. ‘Concentrate’ is the form that maintains the bio-active 3D structure of some important peptides that have many health benefits. Our whey protein is Non-GMO and is always made from rBGH free milk. It contains no yeast, wheat, gluten, corn, preservatives, artificial colors or flavors. It is sweetened with a combination of SwetaTM brand Stevia and luo han guo fruit extract for no aftertaste.