Tri PEP – Branch Chain Amino Acid – Designer Tripeptide BCAATri PEP Branch Chain Amino Acid Designer Tripeptide BCAA BCAAs have been a staple in the supplement industry for over a decade and with good cause. BCAAs are composed of what are considered the three most anabolic amino acids: leucine, valine, and isoleucine. Supplementation can increase muscle protein synthesis, assist glucose uptake into cells, and prevent fatigue. Leucine is the primary driver in increasing muscle protein synthesis. It activates a