• Superior Science. Superior Results.™
• Research & Development
• Amazing Taste!
• America's #1 Selling Bodybuilding Supplement Brand‡
• PerformanceSeries
• Clinically Dosed BCAA Formula
• Builds More Muscle Than Regular BCAAS¹
• Shown To Boost Strength By 40%²
• First Dose Boost In Endurance³
• 30 Servings
• 0 Sugar, 1 g Carbs Per Scoop
• Ingredients Based on Multiple Clinical Studies
• Natural & Artificial Flavors
• Dietary Supplement

Clinically Dosed, Muscle- & Performance-Enhancing BCAA Formula

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

¹Amino 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 (2.5 g) built 3.75 lbs. of lean muscle in 6 weeks compared to 0.66 lbs. by the placebo group. That's over 5.5 times the muscle gained (vs. the placebo). Betaine has also been shown in a separate study to enhance muscle endurance.

Cholewa et al., 2013. Journal of the International Society of Sports Nutrition. 10(1): 39.

Hoffman et al., 2009. Journal of the International Society of Sports Nutrition. 6:7.

Increase Strength by Over 40%

²Amino Build Next Gen is precisely formulated with a 4 g dose of L-leucine (in 2 scoops), shown in a clinical study to help subjects increase their 5-rep max strength by over 40%!

Ispoglou et al., 2011. International Journal of Sports Physiology and Performance 6(1): 38-50.

Enhance Endurance Performance with the First Dose

³The 1 g dose of taurine found in 2 scoops of Amino Build® Next Gen is clinically shown to improve performance in endurance athletes. And for a truly complete formula, precise doses of electrolytes were added to help replenish electrolyte stores that are depleted during your workout!

Balshaw et al., Amino Acids. 44(2):555-561.

‡ MuscleTech is America's #1 Selling Bodybuilding Supplement Brand based on cumulative wholesale dollar sales 2001 to present.