
Optimum Nutrition Gold Standard Natural 100% Casein
- 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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*USA Only. Excludes: AK, HI, orders above 25lbs and bulk orders.

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2lbs French Vanilla
Servings Per Container: 24
† Daily Value (DV) not established.
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.











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