ISO-XP ISO is a high protein dietary supplement made from whey isolate. ISO-XP is high in protein and contains no added fats, carbohydrates or sugars. In addition, it is free of sugars, carbohydrates, lactose, fat and gluten. Sweeteners have been used to replace sugars in the production process to reduce the sugar content. Thus, this product is ideal for people who want to increase their daily protein intake during the cutting period, without adding any additional sugars. Features of Applied Nutrition ISO-XP 100% Whey Protein Isolate 100% Whey Protein. The product contains 0g sugar per 25g serving. The product does not contain any carbohydrates. Lactose free. Soy free. Gluten free. The product has a great taste.