Casein+ | Casein Protein Powder

Save 10% With a Stack!

The Build Muscle Stack boosts muscle and strength gain, improves workout performance, and enhances post-workout recovery.

Casein Protein Pre-Workout Post-Workout
$119.97 $107.97
You Save $12.00!

Our "It's On Us" 100% Money-Back Guarantee

If you don’t absolutely love our stuff for whatever reason, we don’t request you deliver it to a PO box in the Gobi Desert by carrier pigeon.

Nor do we ask you to fill a cursed inkwell with orc’s blood and demon saliva and with it complete reams of return forms written in ancient Cyrillic script.

We just . . . wait for it . . . give you your money back. No returns. No forms. No nonsense. Holy moo cows.

That means you can say “yes” now and decide later. You really have nothing to lose.

Why International Bestselling Author Mike Matthews Created Casein+

Casein+ is a 100% natural grass-fed micellar casein protein powder made with milk from small, sustainable dairy farms in Ireland.

Micellar casein is the highest quality casein you can buy, and that’s why every serving of Casein+ contains 26 grams of protein with little or no carbohydrate and fat.

Casein+ is also naturally sweetened and flavored and contains no artificial food dyes or other chemical junk.

And why Irish dairies?

They produce some of the healthiest, cleanest milk in the world, and we work with farms certified by Ireland’s Sustainable Dairy Assurance Scheme (SDAS), which ensures the farmers adhere to best practices in animal welfare, sustainability, product quality, traceability, and soil and grass management.

So, if you want a mouth-watering, high-protein, low-calorie casein protein powder that helps you reach your fitness goals faster . . . you want to try Casein+ today.

You won’t be disappointed.

In fact, if you don’t absolutely love Casein+, just let us know and we’ll give you a full refund on the spot. No form or return necessary.

You really can’t lose, so order now, and try Casein+ risk-free and see if it’s for you.

Science-Backed Ingredients
Science-Backed Ingredients

Every ingredient in our supplements is backed by peer-reviewed scientific research demonstrating clear benefits.

Clinically Effective Doses
Clinically Effective Doses

Every ingredient is also included at clinically effective levels, which are the doses used in scientific studies.

Naturally Sweetened & Flavored
Naturally Sweetened & Flavored

Every supplement is 100% naturally sweetened and flavored and contains no artificial food dyes or other chemical junk.

Lab Tested
Lab Tested

Every ingredient in every bottle of Casein+ is tested for heavy metals, microbes, allergens, and other contaminants to ensure they meet FDA purity standards.

Made in USA
Made in the USA

Casein+ is proudly made in America in NSF-certified and FDA-inspected manufacturing facilities.

100% Money-Back-Guarantee
100% Money-Back-Guarantee

If you don't absolutely love Casein+, just let us know, and you’ll get a prompt and courteous refund. No forms or returns necessary.

Grass-Fed Micellar Casein Protein Powder (26 grams per serving)

Micellar casein is a form of casein protein that has been produced in a way that maximally preserves its slow-digesting properties.

It’s the highest quality casein protein powder you can buy and has a stellar amino acid profile, providing you with 13 grams of essential amino acids per serving.

Casein+ is also made with non-GMO Truly Grass Fed™ casein protein, which comes from hormone- and antibiotic-free milk produced by small, sustainable dairy farms in Ireland.

Grass-Fed Micellar Casein Protein Powder (26 grams per serving)

Grass-Fed Micellar Casein Protein (26 grams per serving)

100% Naturally Sweetened & Flavored

No Artificial Food Dyes or Other Chemical Junk

100% Naturally Sweetened & Flavored

While artificial sweeteners may not be as dangerous as some people claim, studies suggest that regular consumption of these chemicals may indeed be harmful to our health.[1][2][3][4][5][6]

That’s why we use the natural sweeteners stevia and erythritol instead. Studies show that they’re not only safe but can also confer several health benefits, including better insulin sensitivity, a lower cholesterol profile, improved blood glucose control, potential anti-cancer effects, lower blood pressure and inflammation levels, and more.[7][8][9][10]

No Artificial Food Dyes or Other Chemical Junk

As with artificial sweeteners, studies show that artificial food dyes may cause negative effects in some people, including gastrointestinal toxicity and behavioral disorders.[11][12][13][14][15]

That’s why we use natural coloring derived from fruits and other foods, as well as natural flavoring.

No Artificial Food Dyes or Other Chemical Junk

No Artificial Food Dyes or Other Chemical Junk

Lab Tested for Potency & Purity

Lab Tested for Potency & Purity

Lab Tested for Potency & Purity

Every bottle of Casein+ is analyzed in a state-of-the-art ISO 17025 accredited lab to verify what is and isn’t in it. That way, you know exactly what you’re getting and putting into your body.

Casein Lab Test Certificate Page 1 Casein Lab Test Certificate Page 2

How to Use Casein+

As a dietary supplement, mix 1 serving of Casein+ with 8-10 oz of water, milk, or your favorite beverage.

For pre-bed nutrition, take 1 serving 30 to 60 minutes before going to sleep.

For pre-workout nutrition, take 1 serving 30 to 60 minutes before working out.

For post-workout nutrition, take 1 serving within 60 minutes of finishing working out if you weigh less than 150 pounds and 2 servings if you weigh more than 180 pounds.

Supplement Facts

Customers Who Bought This Also Bought

Verified Customer Reviews

Casein Ingredients & Use

  • Milk Chocolate
  • Casein+ Milk Chocolate Supplement Facts
  • Vanilla
  • Strawberry
  • Banana Cream Pie
Casein+ Milk Chocolate Supplement Facts Casein+ Vanilla Supplement Facts Casein+ Strawberry Supplement Facts Casein+ Banana Cream Pie Supplement Facts


As a dietary supplement, mix 1 serving with 8-10 oz of water, milk, or your favorite beverage.


Not intended for persons under the age of 18. Do not use if pregnant or nursing. Consult a health care professional prior to consumption if you have any pre-existing medical conditions or are taking any prescription medication. Improper use of this product will not improve results and is potentially hazardous to a person’s health. Use only as directed.


Frequently Asked Questions

Why is Casein+ more expensive than other casein protein supplements?
How much casein protein can I eat per day?
I’ve heard that eating casein protein after a workout can help me build muscle faster. Is that true?
If Casein+ is too sweet/strong or isn't sweet enough for me, what should I do?
What does the Prop65 warning on the label mean?
Is Casein+ gluten-free or vegetarian?

+Scientific References

1. Splenda alters gut microflora and increases intestinal p-glycoprotein and cytochrome p-450 in male rats.

Abou-Donia MB, El-Masry EM, Abdel-Rahman AA, McLendon RE, Schiffman SS. J Toxicol Environ Health A. 2008;71(21):1415-1429. doi:10.1080/15287390802328630.

3. Consumption of artificial sweetener- and sugar-containing soda and risk of lymphoma and leukemia in men and women.

Schernhammer ES, Bertrand KA, Birmann BM, Sampson L, Willett WC, Feskanich D. Am J Clin Nutr. 2012;96(6):1419-1428. doi:10.3945/ajcn.111.030833.

4. Fueling the obesity epidemic? Artificially sweetened beverage use and long-term weight gain.

Fowler SP, Williams K, Resendez RG, Hunt KJ, Hazuda HP, Stern MP. Obesity (Silver Spring). 2008;16(8):1894-1900. doi:10.1038/oby.2008.284.

5. Artificial sweetener use among children: Epidemiology, recommendations, metabolic outcomes, and future directions.

Sylvetsky A, Rother KI, Brown R. Pediatr Clin North Am. 2011;58(6):1467-1480. doi:10.1016/j.pcl.2011.09.007.

7. Steviol glycosides from Stevia: biosynthesis pathway review and their application in foods and medicine.

Yadav SK, Guleria P. Crit Rev Food Sci Nutr. 2012;52(11):988-998. doi:10.1080/10408398.2010.519447.

8. Antioxidant, anti-diabetic and renal protective properties of Stevia rebaudiana.

Shivanna N, Naika M, Khanum F, Kaul VK. J Diabetes Complications. 27(2):103-113. doi:10.1016/j.jdiacomp.2012.10.001.

9. Safety evaluation of certain food additives.

Joint FAO/WHO Expert Committee on Food Additives. Meeting, and International Programme on Chemical Safety. Vol. 56. World Health Organization, 2006.

10. Effects of Stevia rebaudiana (Bertoni) extract and N-nitro-L-arginine on renal function and ultrastructure of kidney cells in experimental type 2 Diabetes.

Ozbayer C, Kurt H, Kalender S, et al. J Med Food. 2011;14(10):1215-1222. doi:10.1089/jmf.2010.0280.

11. Toxicological significance of azo dye metabolism by human intestinal microbiota.

Feng J, Cerniglia CE, Chen H. Front Biosci (Elite Ed). 2012;4:568-586.

12. Artificial food dyes and attention deficit hyperactivity disorder.

Kanarek RB. Nutr Rev. 2011;69(7):385-391. doi:10.1111/j.1753-4887.2011.00385.x

13. Meta-analysis of attention-deficit/hyperactivity disorder or attention-deficit/hyperactivity disorder symptoms, restriction diet, and synthetic food color additives.

Nigg JT, Lewis K, Edinger T, Falk M. J Am Acad Child Adolesc Psychiatry. 2012;51(1):86-97.e8. doi:10.1016/j.jaac.2011.10.015.

14. Food additives and hyperactive behaviour in 3-year-old and 8/9-year-old children in the community: a randomised, double-blinded, placebo-controlled trial.

McCann D, Barrett A, Cooper A, et al. [Erratum appears in Lancet. 2007 Nov 3;370(9598):1542]. Lancet. 2007;370(9598):1560-1567.

15. Effect of food azo dye tartrazine on learning and memory functions in mice and rats, and the possible mechanisms involved.

Gao Y, Li C, Shen J, Yin H, An X, Jin H. J Food Sci. 2011;76(6):T125-9. doi:10.1111/j.1750-3841.2011.02267.x.

The #1 Brand of All-Natural Sports Supplements in the World

Over 300,000 customers served and 2,000,000 bottles sold!