Natural Protein™ is a 2 to 1 ratio of whey to collagen protein from grass fed cows. It’s GMO-free, hormone-treatment-free, and antibiotic-free.
18 grams of grass-fed protein per serving!
Whey protein to build lean muscle
Collagen protein to expedite recovery & repair
Colostrum for extra regenerative growth factors
Available in two all-natural flavors, Madagascar Vanilla Bean and Raw Ecuadorian Cacao, it provides a revitalizing dose of bio-available protein.
Enhances muscle growth and repair†
Supports recovery & physical performance†
Promotes skin elasticity and strong connective tissue†
Supports healthy cell regeneration and joint protection†
Mix 1 scoop (19g) with 6 oz of cold water or into your favorite smoothie. Scoop included.
U.S.A manufactured in a cGMP facility. Natural Stacks proudly uses only the highest quality ingredients.
Natural Protein™ contains a complete protein matrix consisting of the finest whey protein concentrate made from fresh milk (not cheese by-products) and pure hydrolyzed bovine collagen protein. The 2 to 1 ratio of whey to collagen protein provides a full spectrum of nutrients essential for fast recovery, a strong immune system, connective tissue strength and durability, and lean muscle growth. Natural Protein™ also contains colostrum from grass-fed, pasture-raised cows to increase the amount of regenerative growth factors. It's biologically-active, undenatured protein powder designed for optimal health and performance.
No Sugar, Sweeteners, Artificial Ingredients, Artificial Flavors, Dyes, or Fillers.
A study examining the effect of protein and resistance training on muscle growth found that “dairy protein, and whey in particular may:
Results from a 2008 study in the Journal of International Society of Sports Nutrition indicated that “subjects that consume a whey protein supplement before and after a resistance training session have a significantly greater improvement in exercise recovery 24- and 48-hours post-exercise than subject ingesting a placebo.” 
A double-blinded randomized controlled trial on young men (age 21-23) found that “the ingestion of a modest dose of whey protein, taken immediately after resistance exercise, is able to enhance the earlier activation of translational kinases in young males compared with exercise alone.” 
In 2008, a 24-week study at Penn State University on 147 student athletes showed significant results for “the use of collagen hydrolysate to support joint health and possibly reduce the risk of joint deterioration” 
A recent clinical study confirmed the pain-reducing and anti-inflammatory properties of hydrolyzed collagen. Specifically, it “demonstrated that collagen peptides are potential therapeutic agents as nutritional supplements for the management of osteoarthritis and maintenance of joint health” 
Results from a randomized controlled trial on 250 subjects showed that “there was a significant improvement in knee joint comfort” when hydrolyzed collagen was ingested daily. 
A 2012 study published in the Journal of Medicine and Sport Science showed that “bovine colostrum is beneficial for certain groups of athletes, such as those involved in strenuous training (e.g. endurance athletes), in terms of immunity and resistance to infection.” 
An 8-week study on 51 men examined the effects of bovine colostrum on exercise performance. Researchers concluded that “bovine colostrum supplementation during training significantly increased peak anaerobic power” 
When investigating how to optimize the performance of highly trained cyclists, it was found that “low dose bovine colostrum supplementation elicited improvements in 40 km time trial performance during an high intensity training period” 
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. Hulmi, J. J., Lockwood, C. M., & Stout, J. R. (2010). Effect of protein/essential amino acids and resistance training on skeletal muscle hypertrophy: A case for whey protein. Nutrition & metabolism, 7(1), 51.
2. BUCKLEY, J., BRINKWORTH, G., & ABBOTT, M. (2003). Effect of bovine colostrum on anaerobic exercise performance and plasma insulin-like growth factor I. Journal of sports sciences, 21(7), 577-588.
3. Farnfield, M. M., Carey, K. A., Gran, P., Trenerry, M. K., & Cameron-Smith, D. (2009). Whey protein ingestion activates mTOR-dependent signalling after resistance exercise in young men: a double-blinded randomized controlled trial. Nutrients, 1(2), 263-275.
4. Clark, K. L., Sebastianelli, W., Flechsenhar, K. R., Aukermann, D. F., Meza, F., Millard, R. L., ... & Albert, A. (2008). 24-Week study on the use of collagen hydrolysate as a dietary supplement in athletes with activity-related joint pain. Current medical research and opinion, 24(5), 1485-1496.
5. Kumar, S., Sugihara, F., Suzuki, K., Inoue, N., & Venkateswarathirukumara, S. (2015). A double‐blind, placebo‐controlled, randomised, clinical study on the effectiveness of collagen peptide on osteoarthritis. Journal of the Science of Food and Agriculture, 95(4), 702-707.
6. Benito-Ruiz, P., Camacho-Zambrano, M. M., Carrillo-Arcentales, J. N., Mestanza-Peralta, M. A., Vallejo-Flores, C. A., Vargas-López, S. V., ... & Zurita-Gavilanes, L. A. (2009). A randomized controlled trial on the efficacy and safety of a food ingredient, collagen hydrolysate, for improving joint comfort. International journal of food sciences and nutrition, 60(sup2), 99-113.
7. Davison, G. (2012). Bovine colostrum and immune function after exercise. In Acute Topics in Sport Nutrition (Vol. 59, pp. 62-69). Karger Publishers.
8. BUCKLEY, J., BRINKWORTH, G., & ABBOTT, M. (2003). Effect of bovine colostrum on anaerobic exercise performance and plasma insulin-like growth factor I. Journal of sports sciences, 21(7), 577-588.
9. Shing, C. M., Jenkins, D. G., Stevenson, L., & Coombes, J. S. (2006). The influence of bovine colostrum supplementation on exercise performance in highly trained cyclists. British journal of sports medicine, 40(9), 797-801.