Optimum Nutrition Gold Standard 100% Casein Reviews

Ideal for Between Meals and Before Bed to Feed Muscles and Fuel Recovery*

Add to Cart
Overall Rating
8.7
Out of 10
Good
2556 Total Ratings
Verified Buyer Rating:
8.8
896 Verified Buyer Ratings
Average Taste Rating:
7.8
View Flavor Ratings
7.9
Creamy Vanilla
8.2
French Vanilla
8.2
Chocolate Supreme
7.6
Chocolate Peanut Butter
7.6
Chocolate Creme
6.8
Strawberry Cream
7.7
Mint Chocolate Chip - Exclusive!
7.8
Banana Cream
7.8
Mint Chocolate Chip
7.9
Cookies & Cream
1-20 of 2,556 Reviews

Very good before bed, helps give you a lot of nutrients throughout the night while you are sleeping that your body normally wouldn't get. Would recommend.



XxAhmedAxX's Rating
6/10
Cookies & Cream
5/10

XxAhmedAxX did not leave a written review for this product.



jwilliamson0712's Rating
9/10
View Flavor Ratings
Hide Flavor Ratings

Doesn't mix as well as ON Gold Standard Whey in the blender bottle. So I use a blender, and it tastes great!



MaxtrainJones's Rating
9/10
Creamy Vanilla
9/10

gritty . taste ok . this is a good casein will continue to buy.



sxytr8ner's Rating
10/10
Chocolate Peanut Butter
10/10

OMG! I'm addicted. I love this product. I add my BCAA powder and Creatine as my post workout and it holds me over for a few hours. The taste is delicious and it's not too thick when mixed with coconut milk. That's definitely a plus for me! I'm reordering now just because I dont' want to run out in a few weeks. Love it!



newwave316's Rating
10/10
Chocolate Supreme
9/10

I take this product every night before I go to bed. I love the taste and it goes down smooth and does not clump up like other products I've tried. I find that it the morning after taking this supplement I wake up not starving and feeling great. It has helped me, along with other supplements I take improve my physique and I've been able to cut down my body fat and gain muscle with this product. I look forward to anytime it is on sale on bodybuilding.com or featured with a gift. I recommend this protein as well as the ON whey protein to anyone. It is the best quality and taste of all protein supplements I've tried and it works great.



Easy to mix, great taste and cost is good !!!



jay4life02's Rating
10/10
View Flavor Ratings
Hide Flavor Ratings

Excellent protein for night-time recovery! Special thanks goes to the Optimum Nutrition family :)



benpensyl's Rating
9/10
French Vanilla
9/10

Great taste. I love the optimum line of products. My only caution to people is the fact that it is a casein protein. It is slow digesting so when you wake up in the morning after taking casein you never get that empty/ leaned out feeling. I personally think whey is a better choice but this product is a solid casein protein if you are feeling like you need casein.



Johnnyleon's Rating
10/10
French Vanilla
8/10
Cookies & Cream
9/10

It's a great product coming from a good company . If you take a look at the 1st ingrident it has Micellar Casein . You get 9grams of essential amino acids 24 grams of protein. I like to take this right before bed & why is that cause it's known as a slow digesting protein so it's feeding my muscles slowly while im sleeping .



Ghaith82's Rating
10/10
Chocolate Supreme
9/10

its very excellent supplement with good taste protein from ON.



misterwhaskers's Rating
10/10
Chocolate Supreme
10/10

I have been recently supplementing with casein. This is by far some of the best tasting protein power I've had. I absolutely love it. It mixes well, but I prefer it mixed with avocado and milk and making a paste like substance. This has beneficial to me as I am vegetarian. I would suggest this tasty protein.



urvpatel's Rating
9/10
Cookies & Cream
7/10

I usually don't use casein protein powder but I did try once. It is good product but it wasn't adjusting my routine due to my working hours and daily life style. It is good product for sure. It would definitely help to maintain your muscle during sleep and you don't even feel floated.



Sagarpande's Rating
9/10
Chocolate Supreme
9/10

It is a really good Casein powder and one of the best currently available in the market. Optimum Nutrition is the most trusted brand in supplement industry since 3 decades and I've been using their products and the results are really good.



BradBender's Rating
10/10
French Vanilla
10/10

BradBender did not leave a written review for this product.



It's a good protein no side effects for me definetly recomend this



Great product! Who doesn't the feeling of drinking a tasty protein shake and feeling the gainz flood your veins!? I ordered the Mint Chocolate Chip flavor as my first and only sample of this Casein product, and I was not let down! The powder has a nice puffy consistency similar to cooking flour, and mixes well with either water or milk (given that you shake the F out of it with a standard blender bottle and mixer ball). This particular flavor tastes amazing! It has enough sweetness to make you feel like you're having dessert but its not overwhelmingly sugary. Excellent mix. Highly recommend.



LHorton409's Rating
10/10
Chocolate Peanut Butter
10/10

I like using this product at night. I've been using it for years.



OcalaFL's Rating
10/10
Mint Chocolate Chip
10/10
Mint Chocolate Chip - Exclusive!
10/10

All time favorite flavor its like having a shamrock shake all year long!!



jeejeeShredded's Rating
10/10
Chocolate Supreme
10/10

jeejeeShredded did not leave a written review for this product.


1-20 of 2,556 Reviews