SLOW DIGESTING MICELLAR CASEIN PROTEIN! A HIGH-PROTEIN DIETARY SUPPLEMENT SUPPLEMENTS DIET WITH PROTEIN WHICH CONTRIBUTES TO A GROWTH AND MAINTENANCE MUSCLE MASS CONTAINS MICELLAR CASEIN WHICH IS A SOURCE OF PROTEIN WITH PROLONGED ABSORPTION CASEIN 100 is a high-protein dietary supplement. It contains micellar casein which is a great source of protein with beneficial prolonged absorption time. CASEIN 100 supplements diet with protein which contributes to a growth and maintenance muscle mass.