From Manufacturer's Label: Nature's Best perfect low carb isopure contains 42 grams of 100% Ion Exchange Whey Protein Isolate. Any and all impurities typically found in most whey proteins have been removed to provide you with a great tasting, lactose free, fat free, glutamine enriched, state of the art carbohydrate free protein supplement.  Available in flavors Creamy Vanilla and Dutch Chocolate. Manufactured by: Nature's Best