Optimum Nutrition Gold Standard 100% Micellar Casein Protein Powder, Slow Digesting, Helps Keep You Full, Overnight Muscle Recovery, Chocolate Supreme
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4.8 out of 5 stars with 11 reviews
5 out of 5 stars
15 November, 2025
originally posted on optimumnutrition.com
Casein
Years ago when I was living in Turkey, I always liked this brand. Even though Optimum was way more expensive than other supplements, I still tried to buy it because it was my favorite. But unfortunately, not all of their products were available in Turkey. Now that I live in the U.S., I’m always an Optimum customer. After using it for so many years, I know they make the best and most effective sports supplements. — From a long-time loyal customer.
5 out of 5 stars
23 April, 2025
originally posted on optimumnutrition.com
Great taste
I love blending it with peanut butter, and graham crackers before bed
1 reply from ON team - 9 months ago
Reminds me of our new S'Mores flavor for Gold Standard 100% Whey which you absolutely have to try! 😃 🔥 🍫
5 out of 5 stars
14 August, 2024
originally posted on optimumnutrition.com
Great Taste
Love the taste of this protein powder. It also has a great consistency.
5 out of 5 stars
11 May, 2024
originally posted on optimumnutrition.com
To achieve a SHREDDED, LEAN, MUSCULAR BODY-FRAME
Excited slow digesting supplement along side shred
5 out of 5 stars
28 February, 2021
originally posted on https://www.optimumnutrition.com

Before Bed Snack
I use this daily as a pudding for my evening meal. 1/2 cup of water per scoop makes the best tasting protein pudding you have ever had!
5 out of 5 stars
9 February, 2021
originally posted on https://www.optimumnutrition.com

I would buy this product again
The flavour is absolutely good m.
5 out of 5 stars
9 February, 2021
originally posted on https://www.optimumnutrition.com

I have been a regular user of ON's Casein protein for years.
I use the protein post workout because I will often not get to eat a meal. It leaves me feeling full for a longer period of time than whey protein shakes.
4 out of 5 stars
6 February, 2021
originally posted on https://www.optimumnutrition.com

Tastes pretty decent
This stuff tastes pretty decent, not chalky at all like I expected. It doesn't dissolve as fully as whey protein so make sure you shake it up even more. I will definitely be buying it again.
4 out of 5 stars
2 February, 2021
originally posted on https://www.optimumnutrition.com

Great quality. Ok taste
If you have ever tried ON Hydrowhey then you will know they make some really good stuff. The Casein is good, but its not as smooth as you would expect. This may have to do with its makeup. Overall, great stuff that I will continue to purchase!
5 out of 5 stars
1 February, 2021
originally posted on https://www.optimumnutrition.com

Best Tasting
Use this nightly as a pudding!!
5 out of 5 stars
9 August, 2013
originally posted on swansonvitamins.com
First Caseinproduct
this was the first product I tried after much research. Chosen for value & taste, it didn't disappoint. Casein mixes very thick but I was prepared so added more liquid. Certainly kept me fuller longer than whey & had a pleasant taste, not too sweet. High quality & lower price was decision making factor & I will be ordering more.