Micellar casein from reflex nutrition is an instant mixing time release protein product it is made from fresh skimmed milk it is not to be confused with acid casein or caseinates which are made using manufacturing processes which can denature the protein the protein found in reflex micellar casein is un denatured providing approximately 80 casein protein and 20 whey protein micellar casein from reflex nutrition is an instant mixing time release protein product it is made from fresh skimm