XS Whey Protein powder Vanilla flavour contains Whey 83%(approx.),Calcium caseinate 3% (approx.) and Sodium caseinate 2%(approx.).Protein helps contribute to growth and maintenance of muscle mass.XS Whey protein provide 30g of protein per serving and is formulated with 12 g of essential amino acids and 2.8g of leucine. These nutrients can be helpful in pre and post workouts.