In NutrActive '4in1 Milk Protein' we use only 100% Pure Whey Protein. Whey Protein highly bioavailable, extremely low in lactose and high in pure protein. Our whey protein provides a complete profile of amino acids that are needed for so many important jobs in the body. * Kids can enjoy the whey as a part of a complete healthy diet. Adults can use our whey protein to complement their diet plan and to replenish protein levels after workouts to support muscle production.