Macro Nutrition Isolate Zero has produced the nutritional supplement Whey Protein Isolate using a cross-flow microfiltration process. “Macro Nutrition Isolate Zero” contains digestive enzymes to improve the digestion process. It also has a very high percentage of protein and a very low percentage of fats and carbohydrates, making it one of the purest forms of protein. Another advantage is its high biological value, as it contains a significant amount of amino acids.