The phd nutrition phd nutrition micellar casein is a high quality casein protein shake benefiting from added leucine and glutamine peptides suitable for those wanting an effective muscle building shaker phdrsquos micellar casein supplement delivers over 21g of protein per serving helping to boost protein intake and assist with the building of lean muscler high in branched chain amino acids and l glutamine the phd micellar casein plus provides over 35g of bcaas and almost 4g of l glu