Proteins support a growth of the muscle mass and its maintenance. Mass Gainer contains a carbohydrate-protein mix combined with micronutrients. The carbohydrate mix contains 5 different carbohydrate sources and delivers the corresponding staggered energy. The high quality protein content is based on a mix of whey protein isolate from cross flow filtration, but also on natural caseine, and on hydrolysate of both sources. Creatine increases physical performance in short-term, high intensity exercise. Mass Gainer delivers 3000 mg of creatine per daily ration. Also enriched with the free amino acids L-leucine and L-glutamine as well as with medium chain fatty acids (MCT) for extra energy.