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Gold Standard Natural 100% Casein

Optimum Nutrition Gold Standard Natural 100% Casein

An Product
All Natural Gold Standard Casein Protein
  • 24g of instantized, slow-digesting micellar casein
  • No artificial flavors, sweetners, or synthetic colors
  • Over 9g of BCAAs, Glutamine, & Glutamine Precursors per scoop
  • Aminogen enhanced
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Product Information

Natural 100% Casein Gold Standard Highlights:

  • 24 Grams of Protein Per Serving Helps Build & Maintain Muscle*
  • 4.9 Grams of Naturally Occurring BCAAs to Support Recovery*
  • 4.8 Grams of Naturally Occurring Glutamic Acid
  • Ideal for Use Between Meals or Before Bed
  • No Artificial Flavors, Sweeteners or Colors
  • Banned Substance Tested
  • 40% of the Daily Value for Calcium
  • 130 Calories per Serving
  • 0.5 - 1 Gram of Fat Per Serving

Rapid protein use is desirable immediately before and after exercise to help refuel recovering muscles, but delayed digestion and absorption may be more beneficial at other times – including bedtime when your body typically goes for hours without food.*

Casein proteins are sensitive and tend to thicken in the stomach. Because of this, it can take more than twice as long for our Gold Standard Natural 100% Casein to be broken down into its amino acid subcomponents than other proteins. Gold Standard Natural 100% Casein is also free of artificial flavors, sweeteners, and synthetic colors and uses only premium micellar caseins to create a protein that's truly time-released.*

You can also use Natural 100% Casein Gold Standard in your meal replacement shakes!

Muscle Fuel Around the Clock

Optimum Nutrition has you covered day and night. Try Optimum Nutrition 100% Whey Gold Standard before and immediately after workouts for a fast-acting rapid shot of amino acids right when you need it, and Optimum Nutrition 100% Casein Gold Standard between meals and before bed for prolonged, sustained coverage.

Graphic showing Natural 100% Casein tub with full scoop sitting on nightstand next to alarm clock
Reviews
Overall Rating
4.7 out of 5 stars
Reviews (96)
Verified Buyers (95)
Review Graph
  • 5 star
    83%

  • 4 star
    12%

  • 3 star
    3%

  • 2 star
    1%

  • 1 star
    1%

Top Rated Flavors
  • Chocolate (5/5 )
  • Chocolate Crme (4.9/5 )
  • Chocolate Creme (4.8/5 )
  • French Vanilla (4.5/5 )
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  • French Vanilla
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Ali A
Build Muscle
Verified Buyer
CASEIN FROM ON IS THE WAY TO GO, TESTE GOOD, I TAKE IT AROUND 10 PM AND IT KEEPS ME FULL ALL NIGHT.*
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2023-09-11 12:16:41Z
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  • Chocolate
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Glenn C
Verified Buyer
This is my go to casein. Clean ingredients list and taste fantastic! Only problem is how OVER priced and expensive it is. Optimum has gotten pricey over the years*
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2023-03-27 13:02:08Z
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Overall Rating
  • French Vanilla
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Todd T
Build Muscle
Verified Buyer
Optimum Nutrition Gold standard natural 100% casein helps me meet my protein goals without a bunch of artificial flavors or ingredients. I often take this before bed because it is a slow digesting protein. The flavor is subtle,but I like it and there isn't a weird after taste.*
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2022-10-10 05:52:20Z
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  • French Vanilla
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Patrick S
Verified Buyer
Great taste, goes down smooth for end of the day protein meal. *
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2022-03-20 21:34:15Z
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  • French Vanilla
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John G
Verified Buyer
I use this at night before bed time as my late night snack. Great product *
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2022-02-18 16:42:21Z
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  • French Vanilla
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James H
Verified Buyer
The flavor is a good vanilla but the smell is like waffles in the morning. This is best when taken at night before bed. *
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2022-02-13 03:22:45Z
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  • French Vanilla
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Steve S
Healthy Lifestyle
Verified Buyer
Love the French Vanilla flavor. Like all casien, it's very filling and slow digesting.*
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2022-02-04 00:17:24Z
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  • French Vanilla
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Todd T
Build Muscle
Verified Buyer
Optimum Nutrition Natural 100%Casein has a good, slightl hint of sweet taste. It doesn't taste like an amazing dessert like some other protein powders, but it allows you a chance to cut back on artificial sweeteners or sugar. Casein is a great slowly digested protein.*
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2022-01-31 07:03:24Z
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  • French Vanilla
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Steve S
Healthy Lifestyle
Verified Buyer
Best Casein I've found. Tastes great and is easy to stack with other supplements*
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2022-01-03 01:04:51Z
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  • French Vanilla
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Kristian D
Verified Buyer
Mixes well and tatses great!No gritty mouth feel and good amount of aminos. *
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2021-11-03 20:25:28Z
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* Muscle & Strength does not imply any medical claims from this review. There are no guarantees of specific results and results may vary.
* These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

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