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Optimum Gold Standard 100% Casein Reviews

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

View Product Info
Overall Rating
8.7
Out of 10
Good
2203 Total Ratings
Verified Buyer Rating:
8.9
640 Verified Buyer Ratings
Average Taste Rating:
7.5
View Flavor Ratings
7.9
Creamy Vanilla
8.3
Chocolate Supreme
7.6
Chocolate Peanut Butter
7.1
Strawberry Cream
7
Blueberries & Cream
7.8
Banana Cream
7.5
Chocolate Cake Batter
7.9
Cookies & Cream
6.7
Raspberry Smoothie
1-20 of 2,203 Reviews

gacman8's Rating
9/10
Chocolate Peanut Butter
8/10
Cookies & Cream
8/10

ON is the standard when it comes to protein. One of the better casein Powders out there but not THE best. Quality stuff to mix with whey, bake with or take with water. Its pretty thick with milk. Does the job well though.



Omelend00's Rating
10/10
Cookies & Cream
10/10

This flavor is Awesome



saracflores's Rating
10/10

Chocolate supreme is BANG BANG. I would definitely order this again and maybe try a new flavor but I'm kinda sketchy on that decision since I'm scared it won't be as great as chocolate supreme. Sometimes I'll use it in pancakes and mix it with egg whites, bit of oatmeal and strawberries. I honestly love it. Also, awesome for a late night snack if you're craving something sweet or just really hungry. Whenever I'm at work I just can't wait to get back home and sip on my casein protein shake!



giovannafaria3's Rating
10/10

giovannafaria3 did not leave a written review for this product.



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

I switched from GNC because of price. I like the flavor. it's a treat to me. I mix with oatmeal, sometimes have an a la carte shake. oatmeal mixes very well because of the warmth (Cook oatmeal first, then add casein and a 3-4 tblspoon of cold or hot water, mix with spoon...) Mixes the same as my previous brand. Casein doesn't mix easily like whey, but it is more filling and tides me over between meals or at bedtime. Good casein if you want casein.



brickhouse4's Rating
7/10
Chocolate Supreme
3/10

It works!! Just not a big fan of the taste, maybe need to explore other flavors because I really have to choke it down.



Gatita17's Rating
10/10
Chocolate Peanut Butter
10/10

Gatita17 did not leave a written review for this product.



JRealGhetto's Rating
10/10
Raspberry Smoothie
1/10
Chocolate Supreme
10/10

JRealGhetto did not leave a written review for this product.



jitterbug610's Rating
8/10
Creamy Vanilla
8/10

Creamy vanilla is so good! I'm excited to try the other flavors! It really does help me keep full but it does leave little clumps of powder if I don't add enough water. My order of Blueberry and cream is on it's way and I'll try using a blender instead of a shaker.



mohamad94's Rating
9/10
Creamy Vanilla
10/10

The flavour profile is really good very light to take down and very easy to mix been using it for two weeks and have been seeing results and feeling less sore in the morning over all 9/10



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

Never really understood the importance of Casein for recovery. That is until I tried this product. This really helped and gave me proper recovery after a night's sleep. I use this as a before sleep drink and next day, I'm not as tired as I expect to be after the previous day's intense workout.



Sasharka's Rating
9/10

tastes pretty good and keeps me full.



taylerb63's Rating
10/10

I tried the vanilla flavor first and was absolutely tired of it after two weeks, couldn't stand the artificial fragrance smell of it so i decided to try the Chocolate Supreme. 1 Million times better tasting, was like a 10:00 dessert, i couldn't believe the difference in flavor. For vanilla is 6/10 for chocolate its 10/10, blows it out of the water.



  • rcosse
  • View Progress
Verified Buyer
rcosse's Rating
9/10

It is a good supplement to take over night. Real gains and muscle regeneration!



davey2240's Rating
9/10

davey2240 did not leave a written review for this product.



Joecalandra's Rating
10/10
Strawberry Cream
5/10

Great feeling and gains through the night or anytime you can't get a meal, flavor was rough but took it fast with a little cocoa in it and moved on. I'd say chocolate or vanilla. Not the kinda product you wanna play around with the flavor but awesome protein



prettyboyboo's Rating
9/10
Strawberry Cream
5/10
Chocolate Supreme
10/10

I love ON's Casein protein. I love the Chocolate Supreme the most. It has the thick texture that I look for in casein proteins. I didn't enjoy the taste of the new Strawberry Cream at all and it didn't thicken up like the other flavors.



magik418's Rating
10/10
Chocolate Supreme
8/10
Cookies & Cream
10/10

magik418 did not leave a written review for this product.



TGordz's Rating
9/10
Chocolate Supreme
8/10

Does what advertised, taste is ok with water, you can keep it down and tastes fine



davelange7's Rating
10/10
Creamy Vanilla
10/10

I've been using it daily for 2 years. My schedule on it is for breakfast after working out. I mix one full scoop of it with another full scoop of ON 100% Whey Protein (French Vanilla) and low sugar orange juice, about 12 oz. My favorite part of breakfast and the mix seems to work for me on my low fat diet plan and for muscle recovery.


1-20 of 2,203 Reviews
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