Benefits Delivers 23g of slow-releasing protein Get a hit of protein between meals and even while you sleep About this item Key benefits contributes to the growth of muscle mass consume before bed or between meals slow release protein Micellar casein is a, slow release protein derived from milk it's absorbed slowly by the stomach allowing a tapered supply of amino acids to the muscle over a prolonged period of time This makes micellar casein the ideal protein supplement for between meals and before bed