MPS-X10™ — Muscle Protein Synthesizer™ (BCAA & EAA Formula) 10,000 mg essential amino acids (EAAs). 7,500 mg branched-chain amino acids (BCAAs). Scientifically proven 2:2:1 ratio of leucine to isoleucine and valine. Looking for a great-tasting drink you can have pre-, intra- or post-workout? Well, Muscle Protein Synthesizer™(MPS) is the product for you! MPS-X10™ contains a full spectrum of essential amino acids (EAAs), which are the building blocks of muscle. EAAs are necessary for increasing muscle protein synthesis and have a muscle-sparing effect on muscle tissue. Recent research suggests that EAAs are superior to branched-chain amino acids (BCAAs) for increasing muscle protein synthesis. What separates MPS-X10™ from every other amino acid supplement on the market is the 2:2:1 leucine, isoleucine and valine ratio of the BCAAs it contains. vpx black friday