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ON 100% Casein Gold Standard Protein

Optimum Nutrition Gold Standard 100% Casein

An Product
Slow Digesting, Anti-Catabolic Casein Protein High in BCAAs!
  • 24g of slow-digesting micellar casein per serving
  • Over 5g of BCAAs (Leucine, Isoleucine & Valine)
  • Very low levels of fat, sugars & carbohydrates
  • Ideal for use between meals and before bed
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Buying Options
$39.99 39.9900
2lbs
25 Servings | $1.60 Per Serving
+
$64.99 64.9900
4lbs
53 Servings | $1.23 Per Serving
+
 
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Nutrition Info

2lbs Chocolate Peanut Butter

Serving Size: 1 Scoop
Servings Per Container: 25
Amount Per Serving
Amt
%DV
Calories
120
Total Fat
1g
1%
Cholesterol
15mg
5%
Sodium
240mg
10%
Total Carbohydrate
4g
1%
Dietary Fiber
1g
4%
Total Sugars
1g
Includes 0g Added Sugars
 
0%
Protein
24g
48%
Calcium
500mg
40%
Iron
1.4mg
8%
Potassium
200mg
4%
Magnesium
85mg
20%
Zinc
11mg
100%
* % Daily Value is based on a 2,000 calorie diet. Your daily values may be higher or lower based on your calorie needs.
† Daily Value (DV) not established.
Ingredients
Micellar Casein, Cocoa Powder (Processed with Alkali), Natural And Artificial Flavor, Salt, Gum Blend (Guar Gum, Gum Acacia, Xanthan Gum), Sunflower and/or Soy Lecithin, Magnesium Oxide, Acesulfame Potassium, Sucralose, Zinc Sulfate Monohydrate.
Allergen Warning
Contains: Milk and Soy.

Add 1 scoop Casein Protein Powder to 10-12 fl oz of cold water, milk or other beveraage and stir, shake or blend until dissolved. For best results, mix up your shake 30-60 minutes before bed, or have it between meals as an anytime snack in your balanced, high-protein diet. Use 8-10 fl oz for a thicker consistency and 12-14 fl oz for a thinner consistency.

For healthy adults, consume enough protein to meet your daily protein requirements with a combination of high protein foods and protein supplements throughout the day as part of a balanced diet and exercise program. Keep out of reach of children.

Directions
Warnings
Expand Info
Product Information

Beyond the Basics

  • Best-Selling Micellar Casein
  • 75% Protein by Weight (24G of Protein per 32G Serving Size)
  • 24 Grams of Slow-Digesting Micellar Casein per Serving
  • Over 5 Grams of BCAAs (Leucine, Isoleucine and Valine) per Serving
  • Very Low Levels of Fat, Sugar & Carbohydrates
  • Ideal for Use Between Meals and Before Bed

Sometimes slower is better - especially when it comes to the rate of protein digestion. While rapid protein absorption is desirable directly before or after exercise, delayed release is probably more beneficial throughout the remainder of the day and night time.

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 protein sources. Because of their unique time-released traits, caseins are aptly described as anti-catabolic or muscle-protecting proteins.

Casein protein is ideal for use in between meals and before bed. Casein protein is sometimes known as "night time" protein because it's ideal to have just before you go to bed.

Muscle Fuel Around the Clock

Optimum Nutrition has you covered day and night. Try Optimum Nutrition 100% Whey Gold Standard before and immediately after workouts for a fast-acting rapid shot of amino acids right when you need it, and Optimum Nutrition 100% Casein Gold Standard between meals and before bed for prolonged, sustained coverage.

Optimum Nutrition 24-Hour Coverage

Reviews
Overall Rating
4.7 out of 5 stars
Reviews (545)
Verified Buyers (524)
Review Graph
  • 5 star
    80%

  • 4 star
    15%

  • 3 star
    4%

  • 2 star
    0%

  • 1 star
    1%

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Overall Rating
  • Chocolate Supreme
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Jason o
Verified Buyer
Best tasting casein protein. Great bed time slow digesting protein source . Gained 5 lbs since I switched from a whey protein to casein. Bed time is one of the most critical times to absorb protein because it's the longest amount of time you go without food*
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2022-09-29 03:28:18Z
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Overall Rating
  • Creamy Vanilla
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Bxbully
Verified Buyer
This is the best Casein I have tried. It mixes easily. Leave it for a few hours and it gets thick. Vanilla it a great flavor*
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2022-09-22 20:11:11Z
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Overall Rating
  • Chocolate Supreme
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Samuel H
Build Muscle
Verified Buyer
Tasty, blends well with water or milk. I've been using it for years.*
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2022-08-30 14:07:06Z
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  • Chocolate Supreme
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Mohammad A
Verified Buyer
Great, as always. Mixes better with milk, which also boosts the taste and you feel like drinking chocolate flavored butter biscuits. *
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2022-08-20 15:53:57Z
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  • Cookies & Cream
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Brian W
Verified Buyer
Thick and great shakes and fluff, easy to use and digest, love the flavor*
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2022-07-12 23:11:09Z
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  • Creamy Vanilla
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Anderson K
Build Muscle
Verified Buyer
A must have for those serious about working out and being in shape.*
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2022-07-07 05:02:00Z
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  • Chocolate Supreme
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Jason o
Verified Buyer
Greatest casein protein on the market. Perfect for over night protein source*
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2022-06-28 03:07:31Z
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  • Creamy Vanilla
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DenM
Verified Buyer
I'm a fan of ON products, the protien powders all have a good taste, unlike some that you need to choke down to avoid throwing it out. I mix with milk and ice in a nutri bullet. Not thick and chalking like some others*
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2022-06-17 15:00:57Z
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  • Chocolate Supreme
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LUIZ
Build Muscle
Verified Buyer
I take casein protein on pos-work and before going to bed. It’s an excellent source of slow digest protein and I feel great in the morning.  *
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2022-06-11 21:08:48Z
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  • Chocolate Supreme
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Jason o
Verified Buyer
Greatest night time protein available. Slow digestion to ensure steady source overnight*
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2022-06-11 01:31:47Z
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* Muscle & Strength does not imply any medical claims from this review. There are no guarantees of specific results and results may vary.
* These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

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