Next Gen- Clinically dosed, performance-enhancing BCAA formula with betaine. Builds more muscle than regular BCAA formulas, shown to boost strength by 40%, first dose boost in endurance. MuscleTech researchers have taken their most powerful amino acid formula ever and made it even better, introducing AMINO BUILD NEXT GEN- now with a new, advanced complex, featuring micronized BCAAs, clinically dosed betaine and powerful cell volumizers, plus coconut water, watermelon juice and new, delicious flavors. Unlike inferior products that are underdosed with gimmicky amino acids and no studies to back up their claims. AMINO BUILD NEXT GEN is backed by 4 different clinical studies that demonstrate its muscle-, strength- and performance-enhancing abilities. Builds more muscle than regular BCAA Formulas. Amino Build Next Gen features researched doses of many key ingredients that make it better than regular BCAA formulas. In fact, test subjects who supplemented with the exact dose of betaine in 2 scoops of Amino Build Next Gen built 3.75 lbs of lean muscle in 6 weeks compared to .66 lbs by the placebo group. Thats 5.5 times the muscle gained. Betaine has also been shown in a separate study to enhance muscle endurance.