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GOLD STANDARD 100% CASEIN – Premium Micellar Casein Protein – Creamy Vanilla (2 lbs./27 Servings)

GOLD STANDARD 100% CASEIN – Premium Micellar Casein Protein – Creamy Vanilla (2 lbs./27 Servings)

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GOLD STANDARD 100% CASEIN – Premium Micellar Casein Protein – Creamy Vanilla (2 lbs./27 Servings)

Rated 4 out of 5
34 Reviews|3 Questions | 109 Answers|
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About This Product

  • Supports muscle recovery
  • 24g of protein & 9g EAAs per serving
  • Slow-digesting
  • Creamy Vanilla 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.

Updated Jan 15, 2026
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Serving Size: 1 Scoop
Number of Servings: 27 Servings
Amount Per Serving
% Daily Value
Calories   
N/A*
Calories From Fat   
N/A*
Total Fat   
2%
Saturated Fat   
3%
Cholesterol   
5%
Sodium   
10%
Total Carbohydrate   
1%
Dietary Fiber   
4%
Sugars   
N/A*
Protein   
46%
Vitamin A   
N/A*
Vitamin C   
N/A*
Calcium   
50%
Iron   
N/A*

Other Ingredients:

Micellar Casein, Natural and Artificial Flavors, Inulin, Salt, Gum Blend (Cellulose Gum, Xanthan Gum, Carrageenan), Lecithin, Sucralose, Aminogen, FD&C Yellow #5.

Brand:
Optimum Nutrition
Form:
Powder
Flavor:
Creamy Vanilla
Serving Size:
1 Scoop
Number of Servings:
27 Servings
Price per Serving:
($2.33 / serving)
Product Weight:
39  OZ
Item # :
OP-2037 / 1619758
34 Ratings
4.0out of 5 stars
34 Ratings

Rated 5 stars by 50% of reviewers

Rated 4 stars by 26% of reviewers

Rated 3 stars by 6% of reviewers

Rated 2 stars by 9% of reviewers

Rated 1 star by 9% of reviewers

Would you recommend?
1-10 of 34 Reviews
Rated 5 out of 5
Aug 30, 2023
Solid
Been taking this casein for a few years (took a break going into college) and it does the job. I've seen muscle gain and weight loss consistently while taking it. It's a little hard to get down when you start but that's the norm with these powders. Tastes solid enough too.
Tyler C
Rated 5 out of 5
Mar 16, 2020
Best buy!
Tastes absolutely delicious!! Will buy again!
Alyna S
Rated 5 out of 5
Aug 8, 2019
really is the gold standard
Gold standard of Casein protein as all the other reviewers said.
Trent
Rated 2 out of 5
Aug 2, 2019
Weird consistency, even more weird taste
IDK how this casein keeps getting such high reviews. Compared to Kaged Muscle (Vanilla) this is garbage. The flavor is just awful. It’s like an artificial vanilla almond? Also, the consistency in the of it (before mixing) is very fine; to ONs whey & and hydro-whey (which I use and enjoy). I’ve not had a problem getting it to mix. Either shake more or don’t use ice cold water! Add ice after it’s mixed....

Bing search “consistency for casein powder:
Casein protein powder’s ability to clump up is useful for more than just slow digestion. When the proteins in casein form a clump in the stomach, they keep you feeling full for a longer time. Since that casein powder clump takes up space in the stomach, those hunger signals will be delayed.

I would’t recommend this stuff. I you enjoy it, cool. Different strokes for different folks
Chris
Rated 5 out of 5
Apr 28, 2019
Great stuff
Excellent
MOHAMMED I
Rated 5 out of 5
Nov 30, 2018
Gold standard
Simply the best on the market today!
Andrew P
Rated 5 out of 5
Jul 13, 2018
Nice Product
Excellent Product.
Tarun J
Rated 5 out of 5
May 11, 2018
The best
Great taste and I no longer wake up at night hungry.
Leroy S
Rated 5 out of 5
Apr 27, 2018
Yum in my tummy
Luv it, taste delicious and keeps me full for four hours.
Brigitte R
Rated 4 out of 5
Feb 4, 2016
On's casein protein
I have tried all kind & brands of supplements. And all casein proteins are hard to swallow and this ine is not the exception, Not for "beginners"... but other than that, this is one of the best casein protein that you can buy
Otto
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.

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3 Questions
Why did you choose this?
The Vitamin ShoppeStore

Research

Robert K

I’ve always used this brand for casein

ANTHONY X

You can drink casein protein before bed. This is helpful for me due to my work schedule.

Ruth R

Usually better priced on Amazon but the deal made it better here this time.

Leonard S
How many ounces is the container?
A shopper
Has anyone with Diabetes Type 1 used this? Any problems with it and what has been you success?
Marcie A
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.

 

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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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