ISOPURE ZERO CARB – the first and only product of its kind to contain 42 grams of 100% Whey Protein Isolate. All impurities have been removed to provide you with a great tasting, lactose free, low fat, aspartame free, glutamine enriched state of the art meal replacement shake mix. It contains 25 grams of 100% pure whey protein isolate and not carb in sight. And still with naturally occurring and added glutamine and added vitamins, but not lactose or fillers. 1 pound bag.