Dietary Supplement. Supports Muscle Development. Organic. 100% Natural. Recombinant BST Free. Nothing Artificial: No Artificial Flavors, Sweeteners or Colors. No Artificial Sweeteners or Additives. 4.0g BCAAs Per Serving. Reduced Fat & Lactose Content. What Does Whey Protein Do? Jarrow Formulas® Natural Whey Protein is a 100% natural, organic protein concentrate of whey, from cows not treated with growth hormone and is ultrafiltered to be low in fat, lactose and.