There are other Branched Chain Amino Acid, BCAA, supplements out there, but Universal Nutrition BCAA Stack is made to stand out in the crowd. BCAA Stack uses a scientifically proven ratio of these essential amino acids and the critical amino acid Glutamine. This specific blend of BCAAs and Glutamine is perfect for building lean, powerful muscles. There is also an increase in other potential benefits including immune support, energy support during workouts, inhibiting muscle breakdown, and improved performance and endurance. BCAA Stack is especially valuable for endurance athletes, bodybuilders preparing for competition, and low carb dieters.You may hear about lots of performance boosters and muscle builders, but this BCAA-Glutamine blend may be the best thing for you, especially if you're doing intense training without many rest days or if you're dieting while working out. There aren't many amino acid supplements that have been researched and documented as thoroughly as BCAAs for supporting muscle growth. BCAAs may be the best supplement for your workouts, and none work as fast as Universal Nutrition BCAA Stack.