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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
$35.99 35.9900
2lbs
27 Servings | $1.33 Per Serving
+
$59.99 59.9900
4lbs
55 Servings | $1.09 Per Serving
+
 
Nutrition Info

2lbs Chocolate Peanut Butter

Serving Size: 1 Heaping Scoop (33g)
Servings Per Container: 27
Amount Per Serving
Amt
%DV
Calories
120
Calories From Fat
10
Total Fat
1g
2%
Saturated Fat
0.5g
3%
Trans Fat
0g
Cholesterol
10mg
3%
Sodium
220mg
9%
Total Carbohydrate
3g
1%
Dietary Fiber
1g
4%
Sugars
0g
Protein
24g
Vitamin A
0%
Vitamin C
0%
Calcium
60%
Iron
4%
Typical Amino Acid Profile per Serving
Essential Amino Acids (EAAs)
Tryptophan
 
292mg
Valine
 
1609mg
Threonine
 
1039mg
Isoleucine
 
1312mg
Leucine
 
2129mg
Lysine
 
1822mg
Phenylalanine
 
1144mg
Methionine
 
644mg
Conditionally Essential Amino Acids (CAAs)
Arginine
 
866mg
Cystine
 
79mg
Tyrosine
 
846mg
Histidine
 
688mg
Proline
 
2421mg
Glutamine & Precursors
 
4950mg
Nonessential Amino Acids (NAAs)
Aspartic Acid
 
1589mg
Serine
 
1396mg
Glycine
 
510mg
Alanine
 
664mg
* % 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 (Processed with Alkali), Natural And Artificial Flavors, Salt, Gum Blend (Cellulose Gum, Xanthan Gum, Carrageenan), Lecithin, Acesulfame Potassium, Sucralose, Aminogen®.
Allergen Warning
Contains milk and soy (lecithin) ingredients.

Add on heaping scoop of Gold Standard 100% Casein™ to a shaker cup filled with 10-12 oz of your preferred beverage. Cover and shake for 25-30 seconds. Take Gold Standard 100% Casein™ immediately before bed and in between meals when delayed protein delivery is desired. You may drink Gold Standard 100% Whey™ or Pro Complex® proteins before and immediately after workouts for a rapid shot of amino acids.

Do not use as a sole source of nutrition for weight loss or maintenance. 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
4.6 out of 5 stars
Reviews (510)
Verified Buyers (489)
Review Graph
  • 5 star
    79%

  • 4 star
    16%

  • 3 star
    4%

  • 2 star
    0%

  • 1 star
    1%

Top Rated Flavors
  • Blueberries & Cream (5/5 )
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  • Strawberry (4.7/5 )
  • Cookies & Cream (4.6/5 )
  • Creamy Vanilla (4.5/5 )
  • Chocolate Peanut Butter (4.5/5 )
  • Chocolate Cake Batter (4.5/5 )
  • Cookies & Cream (4.4/5 )
  • Cookie Dough (4.4/5 )
  • Banana Cream (4.3/5 )
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Overall Rating
  • Cookies & Cream
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hamid j
Verified Buyer
Average protein quality, is thick and helps curve hubger a lil longer*
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2021-09-13 05:41:44Z
Overall Rating
  • Cookies & Cream
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Hazem E
Verified Buyer
i can say anything about optimum rather than it's expensive , it test really good as much as dymatize*
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0 of 0 found this helpful
2021-08-28 19:06:22Z
Overall Rating
  • Creamy Vanilla
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Peter K
Build Muscle
Verified Buyer
This is an absolute must have before bed if you truly want to grow! *
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2021-08-25 17:32:20Z
Overall Rating
  • Cookies & Cream
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Sean D
Verified Buyer
I don't much care for the taste, but it's fine, and serves the purpose I bought it for.*
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2021-07-23 00:03:11Z
Overall Rating
  • Chocolate Peanut Butter
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JOHN R
Verified Buyer
I use this at night and tastes like a dessert, Peanut Butter and Chocolate? How can you go wrong!*
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2021-07-19 20:02:24Z
Overall Rating
  • Chocolate Peanut Butter
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Jac B
Sports Improvement
Verified Buyer
Tastes really good, wish it was a little more peanut buttery flavor. Blends and mixes well for a casein protein*
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2021-06-25 16:24:45Z
Overall Rating
  • Chocolate Peanut Butter
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Jimmy D
Verified Buyer
Very chalky taste doesn’t mix that well, flavor is ok would expect more from ON*
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2021-06-13 23:31:56Z
Overall Rating
  • Chocolate Peanut Butter
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Thomas C
Increase Strength
Verified Buyer
Perfect before bed time snack! If you’re maintaining/gaining, this is for you! Can’t beat a months worth of servings in one tub either! *
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2021-06-13 00:31:08Z
Overall Rating
  • Creamy Vanilla
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Steve S
Healthy Lifestyle
Verified Buyer
Great Casein and I like the taste. I use it at night and in the morning*
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2021-06-02 00:58:08Z
Overall Rating
  • Chocolate Supreme
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Kevin S
Contest Preparation
Verified Buyer
Always quality casein, and an even better flavor! Does exactly what casein is supposed to do; that is, keep me full!*
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2021-06-01 16:36:01Z
* 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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