Natural BCAAs™ combines pharmaceutical grade BCAAs with Beta-Alanine to support optimal physical performance.
Research suggests that BCAAs and Beta-Alanine can work together to improve muscular endurance, prevent fatigue, and promote regenerative growth.
Preserves lean muscle while dieting or fasting†
Maximises endurance & strength output†
Stimulates muscle growth†
Take 1-3 servings per day with water, or as directed by a healthcare practitioner.
Natural BCAAs™ can be used before/during/after workouts to boost physical performance, or anytime to preserve muscle, accelerate recovery, and boost energy.
U.S.A. manufactured in a cGMP facility. Natural Stacks proudly uses only the highest quality ingredients.
Branched Chain Amino Acids (BCAAs) are the primary building blocks of protein most known for their acute ability to stimulate muscle growth and development. Shockingly, most BCAA supplements on the market today are made from inferior sources (either human hair, hog hair, or bird feathers). Natural BCAAs™ are made from 100% natural botanical sources. The raw ingredients are purified and milled seven times into a very fine instantized powder. Premium sourcing and the meticulous production process allow for maximum bio-availability, quick absorption, and faster results.
The three BCAA's are leucine, isoleucine, and valine, typically available in a combined 2:1:1 ratio. In the context of sports nutrition, BCAA's are either used as an aid to enhance muscle protein synthesis (MPS), or to preserve muscle protein content during calorie restriction.
Studies by Anthony et al. (2000) and Crozier et al. (2005) first documented in vivo that leucine, over other amino acids, was able to stimulate MPS equivalent to a complete meal, as well as inhibit protein degradation in muscle tissue [1, 2].
A 2012 study examining the effects of resistance exercise and BCAAs, individually and in combination, found that “BCAA has an anabolic (muscle growth) effect on human skeletal muscle, an effect that appears to be similar in resting and exercising human muscle.” 
Published in the Journal of Nutrition, a 2006 placebo-blind study on 30 healthy volunteers showed that “BCAA supplementation prior to squat exercise decreased delayed-onset muscle soreness and muscle fatigue.” 
A study on 4,429 men and women from the U.S., U.K., China, and Japan shows that BCAA keeps people lean. It concluded that “higher dietary BCAA intake is associated with lower prevalence of overweight status/obesity” and that “weight loss induced by high-protein/low-carbohydrate diet may be partially explained by BCAA intake.” 
In 2011, 37 college athletes (football & wrestling) were used to examine the effectiveness of Beta-Alanine in tests of anaerobic power output. The study concludes, “Beta-Alanine appears to have the ability to augment performance and stimulate lean mass accrual in a short amount of time.” 
A double-blind study on cyclists discovered that Beta-Alanine promotes muscular endurance and reduces fatigue. During the final sprint of the time-trial study, “Beta-Alanine, on average, increased peak power output by 11.4%”. Researchers concluded that “oral Beta-Alanine supplementation can significantly enhance sprint performance at the end of an exhaustive endurance exercise bout.” 
A 30 day placebo-controlled study examining the effect of Beta-Alanine supplementation in collegiate football players on anaerobic performance measures found that “short-duration beta-alanine supplementation increases training volume and reduces subjective feelings of fatigue.” 
Most companies use "proprietary blends" so they don't have to tell you the amount of each ingredient in their formulas. At Natural Stacks we believe it's your right to know exactly what you're putting into your body. We proudly publish our innovative formulas and ingredient suppliers in an open source format.
If for whatever reason you're unsatisfied with your Natural Stacks products, you can return the product within 30 days for a full refund. We also provide actionable tips on our blog and newsletter for you to maximize your performance with our premium products.
1. Anthony, J. C., Anthony, T. G., Kimball, S. R., Vary, T. C., & Jefferson, L. S. (2000). Orally administered leucine stimulates protein synthesis in skeletal muscle of post-absorptive rats in association with increased eIF4F formation. The Journal of nutrition,130(2), 139- 145.
2. Crozier, S. J., Kimball, S. R., Emmert, S. W., Anthony, J. C., & Jefferson, L. S. (2005). Oral leucine administration stimulates protein synthesis in rat skeletal muscle. The Journal of nutrition, 135(3), 376-382.
3. Borgenvik, M., Apró, W., & Blomstrand, E. (2012). Intake of branched-chain amino acids influences the levels of MAFbx mRNA and MuRF-1 total protein in resting and exercising human muscle. American Journal of Physiology-Endocrinology and Metabolism, 302(5), E510-E521.
4. Shimomura, Y., Yamamoto, Y., Bajotto, G., Sato, J., Murakami, T., Shimomura, N., ... & Mawatari, K. (2006). Nutraceutical effects of branched-chain amino acids on skeletal muscle. The Journal of nutrition, 136(2), 529S-532S.
5. Qin, L. Q., Xun, P., Bujnowski, D., Daviglus, M. L., Van Horn, L., Stamler, J., ... & INTERMAP Cooperative Research Group. (2011). Higher branched-chain amino acid intake is associated with a lower prevalence of being overweight or obese in middle-aged East Asian and Western adults. The Journal of nutrition, 141(2), 249-254.
6. Kern, B. D., & Robinson, T. L. (2011). Effects of β-alanine supplementation on performance and body composition in collegiate wrestlers and football players. The Journal of Strength & Conditioning Research, 25(7), 1804-1815.
7. Van Thienen, R., Van Proeyen, K., Eynde, B. V., Puype, J., Lefere, T., & Hespel, P. (2009). β-alanine improves sprint performance in endurance cycling. Medicine & Science in Sports & Exercise, 41(4), 898-903.
8. Hoffman, J. R., Ratamess, N. A., Faigenbaum, A. D., Ross, R., Kang, J., Stout, J. R., & Wise, J. A. (2008). Short-duration β-alanine supplementation increases training volume and reduces subjective feelings of fatigue in college football players. Nutrition research, 28(1), 31-35.