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Optimum Nutrition 100% Casein Protein

4 Pounds

Sometimes slower is better - especially when it comes to the rate of protein digestion. While rapid protein absorption is desirable immediately before or after exercise, delayed release is probably more beneficial throughout the remainder of the day. Casein proteins are pH sensitive and gel in the acidic environment of the stomach. As a result, it can take more than twice as long for caseins to be broken down into their amino acid subcomponents than whey and other proteins. Casein is the most abundant protein present in milk. It is considered a high quality protein because it is easily assimilated and it supplies sufficient quantities of amino acids that cannot be synthesized by the body.

: Optimum Nutrition
: 4 Pounds
: 1 Heaping Scoop (32 Grams)
: 55
: Casein Protein

$57.95 $63.95


Casein is The Most Slowly Digested Protein!

Slow and steady wins the race - this also happens to be true in the protein race as well. Typically, athletes, bodybuilders, and fitness enthusiasts resort to Whey Protein for its fast acting properties and benefits. But, when wanting a meal replacement, snack or protein shake before bedtime, Whey protein just can't cut it! Therefore, in spite of finding a solution to the lacking timing of whey protein, Optimum Nutrition has Gold Standard 100% Casein.

The Benefits of Casein Protein

Although the most popular protein is Whey Protein for its fast rate of absorption, you can effectively only use Whey protein before and after exercise. Because of this, an extended release protein is much more desirable and beneficial for daily or nightly uses. Casein protein is known to be pH sensitive, causing it to be digested more than twice as slow than Whey protein alone.

Casein is first found in the form of milk, as the most abundant protein derived from the milk. Due to its ability to assimilate very easily during digestion, Casein is considered a very high quality source of protein.

Along with its benefits of slower digestion, Casein protein is known to cause a fullness far greater than Whey Protein. This fullness is both physical and mental; allow me to explain. Because of the slow digestion, it exhibits pressure onto the walls on the stomach, causing your body to send a signal to our brain that says your stomach is full.

With these numerous benefits of Casein Protein, the most important benefit by far is the slow and steady release of amino acids. This release occurs throughout the many hours it takes for your body to breakdown the Casein Protein, therefore our bodies receive amino acids to our muscles for hours

Casein Research

The Biore study is a clinical study performed on the effects Casein Protein has on the body.

The first set of results (perhaps the most important) shows that Casein causes a 31% increase in protein synthesis and reduces catabolism (muscle loss) by 34%. Along with these great pair of percentages, Casein was proven to increase Nitrogen balance for an average of 7 hours post consumption!

The second set of results had shown that in the ingestion of Casein Protein vs. Whey Protein, individuals were shown to have lost almost 40% more fat and gained more than 50% more muscle by consuming Casein protein.

The results are in if you're ready to take your physique to the next level, then get Gold Standard 100% Casein by ON today!

Available Sizes

Optimum Nutrition 100% Casein Protein 2 Pounds
Optimum Nutrition 100% Casein Protein 4 Pounds

Optimum Nutrition 100% Casein Protein YouTube Video Review

Optimum Nutrition 100% Casein Protein Review
1/24/2013 4:19:39 PM

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SKU: 748927024227 Brand: Category: Purpose: Protein

Supplement Facts

One heaping scoop supplies the following ingredients:  
Calories - 120  
Calories from Fat - 10  
Total Fat - 1 g  
Saturated Fat - 0.5 g  
Cholesterol - 10 mg  
Total Carbohydrate - 4 g  
Dietary Fiber - 1 g  
Sugars - 1 g  
Protein - 23 g  
Calcium - 450 mg  
Sodium - 250 mg  
Aminogen® - 23 mg  
Other Ingredients:  
Protein Blend (Micellar Casein, Calcium Caseinate), Cocoa (processed with alkali), Natural & Artificial Flavors, Salt, Gum Blend (Cellulose Gum, Xanthan Gum, Carrageenan), Sucralose.  
Typical Amino Acid Profile Per Serving(mg):  
Alanine - 636  
Arginine - 830  
Methionine - 617  
Aspartic Acid - 1523  
Phenylalanine - 1096  
Cystine - 76  
Proline 2320  
Glutamine - 4744  
Serine - 1338  
Glycine - 489  
Threonine - 996  
Histidine - 659  
Tryptophan - 280  
Isoleucine - 1257  
Tyrosine - 811  
Leucine - 2040  
Valine - 1542  


Use ON 100% Casein Protein first thing in the morning, immediately before bed, in place of small meals, and/or any other time when delayed protein absorption is desired. To encourage a positive nitrogen balance, consume approximately 1 gram of protein per pound of body weight per day from a combination of high protein foods and supplements. For even better results, consume your daily protein allotment over several small meals spread evenly throughout the day.


Discuss with your physician before taking if you have a medical condition or are taking any prescription medications. Stop use and discuss with your physician if any negative effects occur. Do not exceed the suggested dose. Do not take if pregnant or lactating. Must be 18 years old to use this product. Keep away from children. Do not use if the seal has been tampered with. Store in a cool, dry place.  
Allergen Statement: This product was made in a facility that processes Milk, Whey, Soy and Fish. Contains Milk & Soy. Gluten Free.

* No claims found on this web page or in print have been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. No claim or opinion about weight loss, bodybuilding or general health on this web page is intended to be, nor should be construed to be, medical advice. Please consult with a healthcare professional before starting any weight loss diet or exercise program.

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