Optimum Nutrition – Casein (4lbs)

Optimum Nutrition – Casein (4lbs)

Black and blue container with black lid of ON Optimum Nutrition 100% Casein Gold Standard contains 4 lbs 53 servings

Optimum Nutrition – Casein (4lbs)

$89.99 $84.95

In stock

$89.99 $84.95

  • 24g of Anti-Catabolic Micellar Casein
  • Nearly 5 Grams of Naturally Occurring BCAAs per Scoop
  • Nearly 5 Grams of Naturally Occurring Glutamine and Glutamic Acid per Scoop



Faster digesting protein is desirable immediately before and after exercise to help refuel recovering muscles, but slow digestion and absorption may be more beneficial at other times including bedtime when your body typically goes for hours without food. Casein products are acid sensitive and thicken in the stomach. Compared to some other proteins, it can take longer for our Gold Standard 100% Casein™ to be broken down into its amino acid subcomponents. By using only premium micellar casein as a protein source, we’ve created a formula that sets the standard for slow digesting protein support. 24g of Micellar Casein


Optimum Nutrition

ON Optimum Nutrition logo ON black italic font with arrow through the letters

Additional information


Chocolate Supreme, Creamy Vanilla

10 reviews for Optimum Nutrition – Casein (4lbs)

  1. 5 out of 5

    Johanna (verified owner)

    Cookies and cream is the best tasting flavor I’ve tried. I like to use half a glass of skim milk, fill the rest with water, then add casein. I keep my glasses in the freezer too so it’s ice cold when I drink it. Great flavor. I look forward to drinking it.

  2. 5 out of 5

    harold b (verified owner)

    I’ve been using the 100% whey ON vanilla but needed a slower digesting protein. The whey/casein blend is so, so, so delicious. Blends great, quick dissolve, and I can tell it helps me to feel more satiated before bedtime. DEFINITELY much tastier than the 100% whey, DEFINITELY will be purchasing this from now on. Thanks!

  3. 5 out of 5

    noah h (verified owner)

    Lid of product was cracked and not due to delivery services cause package was not damaged. Update: since the lid was cracked product was all on the inside of the package and after I opened the seal looks like half is missing. I am fearful of tampering possibilities. Either way like I said must have been cracked prior to boxing and shipping. Can’t understand how seller still boxed product and shipped it to me like this.

  4. 5 out of 5

    Dylan Garner (verified owner)

    Most people dont like casein…too thick, tough to mix. My trick….about 10 oz of water in my shaker bottle, then my casein, then more water. Use a spoon or a handheld egg beater, then shake it. I’ve had the vanilla and chocolate peanut butter. Both taste great and mix fine with water

  5. 5 out of 5

    lawrence v (verified owner)

    ON protein powders tend to have pretty good flavors. I’d rate the chocolate supreme casein a 7.5 out of 10. Chocolate supreme is also one of the lower-carbohydrate powders in comparison to the other flavors (although ON generally keeps the carb count low in their protein powders anyway). It mixed well and is easy on the stomach.

  6. 5 out of 5

    Jonathan H. (verified owner)

    Highly recommended product. Previously I was eating cottage cheese before going to sleep but it was not so tasty as Casein. Also I use each time two cups of casein so it gives me 50g protein for a night which is much more than I can get from cottage cheese. Love the taste and result. Already ordered my second one.

  7. 5 out of 5

    Brett E (verified owner)

    Definitely thick, but tasty, mixes not too bad, need to take an extra minute to make sure you mix it all through, enjoyable.

  8. 5 out of 5

    adrian w (verified owner)

    Thanks SD! Best online store to buy protein!

  9. 5 out of 5

    Shawn C (verified owner)

    Ordered Chocolate Cream – tastes great (subjective). After mixing with 300 ml of water in a blender bottle, there are a few clumps left (smaller than a size of a pea) – but its no big deal as i simply chug it down before bed.

  10. 5 out of 5

    Joseph Bowen (verified owner)

    Tastes really good, I would simply recommend you use a blender to blend it with water. The consistency is quite thick compared to Standard Whey and mixing it in a shaker cup just leaves a bunch of clumps behind.

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