Stark Pharm's Flex GCM formula...
During muscle building, it is very important that the body receives amino acids all the time. As you know, this is not always easy to achieve.
BioTech's Casein Zero contains only the slow-digesting protein, the calcium salt of the casein protein.
BioTech's Casein Zero Dietary Supplement is a lactose-free casein protein containing a high concentration of slow-absorbing protein.