ProSupps L-Leucine Matrix 250, teams up L-Leucine, with metabolites HMB and HICA, creating the most anabolic, non-hormonal, product on the market. L-Leucine is the only amino acid that can directly stimulate, and increase capacity for, protein synthesis in muscle cells. Keeping your body in anabolic state crucial for anyone trying to build lean muscle mass or preserve muscle while cutting fat. Add a scoop to your Pre, Intra, or Post workout shake, to increase anabolic activity and maximize muscle growth. Directly stimulate protein synthesis muscle growth. Rapid muscle recovery from intense training. Keep body in an anabolic state. Halt catabolism/muscle breakdown. Support immune system response.