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  • Gold Standard 100% Casein Protein 2lb by Optimum Nutrition Gold Standard 100% Casein Protein 2lb by Optimum Nutrition

Gold Standard 100% Casein Protein 2lb by Optimum Nutrition

Quick Overview

2lb (909g)

Slow Digesting Premium Micellar Casein


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Right before or after training, rapidly digesting whey protein helps start recovery, a process that can take up to 48 hours. Between meals and before bed, when nutritional support won’t be available for a while, casein protein can help provide longer lasting amino acid support.

Sometimes slower is better - especially when it comes to the rate of protein digestion. While rapid protein absorption is desirable immediately before or after exercise, delayed release is probably more beneficial throughout the remainder of the day.

Faster digesting amino acids are 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 proteins are acid sensitive and thicken in the stomach. Compared to some other proteins, it can take more than twice as long for Gold Standard 100% Casein to be broken down into its amino acid sub components. Because of these unique 'time released' qualities, caseins are aptly described as being anti-catabolic, or muscle protecting, proteins.By using only premium micellar casein as a protein source, ON has created a formula that sets the standard for slow digesting protein support.
Best-Selling Micellar Casein

  • 75% Protein by Weight (24g of Protein per 32g Serving Size)
  • 24g of Slow-Digesting Micellar Casein per Serving
  • Over 5g of BCAAs (Leucine, Isoleucine and Valine) per Serving
  • Nearly 5g of Glutamine & Glutamic Acid in Every Scoop
  • Very Low Levels of Fat, Sugar & Carbohydrates
  • Ideal for Use Between Meals and Before Bed

Micellar Casein is the slowest digesting form of casein. It is separated from milk through an ultrafiltration process. One of Micellar Casein’s unusual properties is its ability to gel during digestion so it can release a steady flow of amino acids over many hours.


Average Quantity

Per 1 Scoop Serve (33g)

Per 100g





502kJ (120Cal)

1523kJ (363Cal)




Fat - Total



 - Saturated



Carbohydrate - Total



 - Sugars



 - Fibre 1g 3g




Other Ingredients: Micellar Casein, Natural And Artificial Flavors, Polydextrose, Gum Blend (Cellulose Gum, Xanthan Gum, Carrageenan), Lecithin, Salt, Malic Acid, Acesulfame Potassium, Sucralose, Aminogen®., Colour


Directions: Add one heaping scoop of Gold Standard 100% Casein to a shaker cup filled with 300ml - 350ml of your preferred beverage. Cover and shake for 25-30 seconds. 
For a bolder flavor with slightly more body and sweetness, mix one heaping scoop with 250ml - 300ml of water, milk, or your favorite beverage. For a milder tasting, less sweet shake, use 350ml - 400ml of liquid per scoop.

Warnings: This food is not a sole source of nutrition and should be used in conjunction with a nutritious diet and with an appropriate physical training or exercise program. This food is not suitable for children under the age of 15 or pregnant women. It should only be used under medical or dietetic supervision. Keep out of reach of children.

Additional Information

Ingredients No
Barcode 1031641
Our Brand Optimum Nutrition
Flavour No
Grade No
Scent No
Variety No
eBay Listings No
Manufacturer's Suggested Retail Price $0.00
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