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GOLD STANDARD 100% CASEIN – Premium Micellar Casein Protein – Chocolate Supreme (1.87 lbs./25 Servings)

GOLD STANDARD 100% CASEIN – Premium Micellar Casein Protein – Chocolate Supreme (1.87 lbs./25 Servings)

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GOLD STANDARD 100% CASEIN – Premium Micellar Casein Protein – Chocolate Supreme (1.87 lbs./25 Servings)

Rated 4.5 out of 5
102 Reviews8 Questions217 Answers

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Product Info

About This Product

  • Supports muscle recovery
  • 24g of protein & 9g EAAs per serving
  • Slow-digesting
  • Chocolate Supreme flavor

Fuel your goals even as you sleep with GOLD STANDARD® 100% CASEIN™ by Optimum Nutrition. This slow-digesting formula delivers 24g of premium micellar casein, plus 9g of EAAs to refuel recovering muscles when your body goes for hours without food—like at bedtime.

Frequently Asked Questions

What is micellar casein protein?

Micellar casein is a milk protein that is digested more slowly than other proteins, providing an extended release of muscle-building amino acids that help prevent catabolism.

What is catabolism?  

Catabolism is the breakdown of protein. When your body goes for extended periods without food, or when it’s under significant metabolic stress during exercise, it can resort to catabolizing your muscles for energy.

Read More

Directions

Using a shaker cup is the easiest and most convenient way to mix up a consistently great casein shake every time. Just add one 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.

Warning

Allergen information: This product contains milk and soy (lecithin) ingredients. Store in a cool, dry place. Contents sold by weight not volume.

Read More

Supplement Facts

Serving Size: 1 Scoop
Number of Servings: 25 Servings
Amount Per Serving
% Daily Value
Calories   
N/A*
Total Fat   
2%
Cholesterol   
5%
Sodium   
11%
Total Carbohydrate   
1%
Dietary Fiber   
4%
Sugars   
N/A*
Protein   
48%
Calcium   
40%
Iron   
8%
Potassium   
4%
Magnesium   
20%
Zinc   
100%

Other Ingredients:

Micellar Casein, Cocoa Powder (Processed with Alkali), Natural and Artificial Flavors, Salt, Gum Blend (Guar Gum, Gum Acacia, Xanthan Gum), Sunflower and/or Soy Lecithin, Magnesium Oxide, Acesulfame Potassium, Sucralose, Zinc Sulfate Monohydrate.

Specifications

Brand:
Optimum Nutrition
Form:
Powder
Flavor:
Chocolate Supreme
Serving Size:
1 Scoop
Number of Servings:
25 Servings
Price per Serving:
($2.52 / serving)
Product Weight:
39  OZ
Item # :
OP-2036 / 1619733

Product Reviews
   (102)

102 Ratings
4.5out of 5 stars
102 Ratings

Rated 5 stars by 71% of reviewers

Rated 4 stars by 20% of reviewers

Rated 3 stars by 5% of reviewers

Rated 2 stars by 2% of reviewers

Rated 1 star by 3% of reviewers

Would you recommend?
1-10 of 102 Reviews
Customers talk about
Dec 7, 2025
Rated 1 out of 5
Bad service
I signed up for the mailing list because they offered a discount coupon for doing so. I ordered this product to pick up at my local store which had it in stock. After placing the order the store proceeded to cancel my order. I tried to reorder the item for delivery but the coupon has "already been used." I will unsubscribe and shop somewhere else.
Zachary LVerified Purchaser
Location
Houston, TX, US
Gender
Male
Age Range
35-44
Fitness Level
Advanced
Purchased on Nov 15, 2025
Was this helpful?
Jul 9, 2025
Rated 5 out of 5
Casein
Tastes great. No gritty
bob wVerified Purchaser
Location
Milford, CT, US
Gender
Male
Age Range
45-54
Would you recommend?:Yes
Purchased on Jun 17, 2025
Was this helpful?
Sep 16, 2024
Rated 4 out of 5
good
good
Test UVerified Purchaser
Location
Los Angeles, CA, US
Purchased on Mar 12, 2021
Was this helpful?
Jun 20, 2023
Rated 5 out of 5
Awesome
I love this protein powder. It tastes great!
Adelaide KVerified Purchaser
Location
Charlotte, NC, US
Gender
Female
Age Range
35-44
Fitness Level
Beginner
Would you recommend?:Yes
Purchased on Apr 29, 2022
Was this helpful?
Apr 18, 2023
Rated 5 out of 5
Very impressed
I wasn't sure what to expect because I usually only buy whey protein. This is delicious. I'm very happy to say that it exceeded my expectations and will buy again regularly.
Donald CVerified Purchaser
Purchased on Mar 18, 2023
Was this helpful?
Feb 16, 2023
Rated 5 out of 5
Great protein to take at night.
Tastes great!
Paul GVerified Purchaser
Location
Lawrenceville, NJ, US
Gender
Male
Age Range
45-54
Fitness Level
Advanced
Would you recommend?:Yes
Purchased on Jan 4, 2023
Was this helpful?
Apr 12, 2021
Rated 5 out of 5
Great product
Great taste and great protein ?
Adriana RVerified Purchaser
Location
Waco, TX, US
Gender
Female
Age Range
55-64
Would you recommend?:Yes
Purchased on Mar 4, 2021
Was this helpful?
Apr 6, 2021
Rated 5 out of 5
Thumbs up
Very delicious and easy to mix.
JAVIER MVerified Purchaser
Location
Modesto , CA, US
Gender
Male
Age Range
35-44
Would you recommend?:Yes
Purchased on Jan 28, 2021
Was this helpful?
Feb 5, 2021
Rated 3 out of 5
Casein review
I don't love the flavor. It's just ok.
Kylie M.Verified Purchaser
Location
Alexandria, VA, US
Gender
Female
Age Range
35-44
Would you recommend?:No
Purchased on Dec 16, 2020
Was this helpful?
Dec 14, 2020
Rated 5 out of 5
Tastes amazing
It mixes with water extremely well. No clumping or issues. Tastes so delicious and keeps me fueled for hours. I highly recommend.
Malcolm SVerified Purchaser
Location
NEW PORT RICHEY, FL, US
Gender
Male
Age Range
35-44
Would you recommend?:Yes
Purchased on Nov 13, 2020
Was this helpful?
Disclaimer:

Product reviews are provided for informational purposes only and reflect solely the views and opinions expressed by the contributors and not those of the Vitamin Shoppe. Vitamin Shoppe does not verify or endorse any claims made in these reviews.Please read the full product reviews disclaimer.

Q&A

We'll email them your question, then email you their replies.

Have a question? Ask owners.Have a question about this? Ask people who own it.
Start typing and see existing answers.
8 Questions
Why did you choose this?
The Vitamin ShoppeStore

Slower release.

Chad S

To take before bed to help with waking up in the middle of the night hungry.

Bailie O

Want to try

Angel R

need for the night

Brenda L
Does this contain soy, gluten or wheat ?
wildy p
Is this Gluten Free?
Natalie G

Best Answer:  Sorry, can't really say.

Jacqueline G
How do you mix the powder enough so you than you cannot feel the texture of the powder?
A shopper

Best Answer:  follow the directions on the label, 6-8 oz of water should do the job for one scoop. If you are mixing more tha one scoop with water, go 6-8 oz to each scoop. Try mixing for 15-25 seconds.

Lucas L
Anyone have issues with the belly? I'm borderline Lactose Intolerant so wanted to know if anyone has had problems?
Robert

Best Answer:  This would depend on the individual. Casein proteins contain little to no lactose. Please also feel free to consider looking into some dairy-free protein powders - Theresa K. (VS)

Theresa K.staff
What's the product number appears on the receipt?
A shopper

Best Answer:  The item number for this supplement is OP-2036/1619733

Daniel W.staff
How many amino acids does it cointain is it like the amount of a serious mass proteína? Im asking cuz i cant consume many amino acids
Carmela A
Anyone ever mix this with hot water for a hot-chocolate type drink?
A shopper
Disclaimer:

Product reviews are provided for informational purposes only and reflect solely the views and opinions expressed by the contributors and not those of the Vitamin Shoppe. Vitamin Shoppe does not verify or endorse any claims made in these reviews.Please read the full product reviews disclaimer.

Shipping Info

 

FREE STANDARD SHIPPING on orders of $45 or more

How to get FREE Standard Shipping:

  1. Ship to an address within the United States (including U.S. territories)
  2. Place your online order of $45 or more* - after promotions and before tax are applied
  3. Use "Standard" shipping option at checkout

Orders will be shipped within 24 hours of order placement*, pending verification of billing information and shipping method selected. International orders and orders containing gift cards or items that are not currently in stock will be processed as quickly as possible.

 

*Excludes all orders placed on major US holidays (Memorial Day, Independence Day, Labor Day, Thanksgiving Day, Christmas Day and New Year's Day).

 

Orders for states outside of the continental U.S. (including those of $45 or more) may be subject to a delivery surcharge. This will be noted in the order summary based on your shipping address at checkout.

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About Optimum Nutrition

Optimum NUTRITION has been trusted to provide the highest quality in post-workout recovery, pre-workout energy, and on-the-go sports nutrition products for over 35 years and in more than 100 countries. We are obsessed with quality. We sweat the details, scrutinizing every ingredient in every product that we make. We hold ourselves to the highest production standard, all so you can unlock your body’s full potential.

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