Optimum Nutrition 100% Gold Standard Casein – 2 Lbs

4,599.00 2,149.00

While rapidly digesting whey protein is desirable immediately before and after exercise to help support muscle recovery, a slower digesting casein protein is the better choice between meals and especially right before bed when your body can go for hours without nutritional support. Casein…

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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 subcomponents. By using only premium micellar casein as a protein source, ON has created a formula that sets the standard for slow digesting protein support.

Beyond The Basics:

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

What Is Micellar Casein?

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.

Features and Benefits:

  • Fast-acting whey protein upon waking, pre & post-workout
  • Delivers 5.5 grams of muscle-building bcaas per serving
  • Pure whey protein isolates are the primary protein source
  • Slowly-digesting protein for before & between meals
  • Delivers 10 grams of essential amino acids per serving
  • All micellar casein formula enhanced with digestive enzymes


Micellar Casein, Cocoa (Processed with Alkali), Natural Flavors, Honey Powder, Evaporated Cane Juice, salt, Lecithin, Cellulose Gum, Reb A (Natural Stevia Leaf Sweetener).

Allergen information: Contains milk and soy (lecithin) ingredients.

Directions For Use:

Using a shaker cup is the easiest and most convenient way to mix up a consistently great casein shake every time. Just add one heaping scoop of Gold Standard 100% Casein to a shaker cup filled with 10-12 oz of your preferred beverage. Cover and shake for 25-30 seconds.

Tip: Adjust the intensity of your Gold Standard 100% Casein by varying the amount of liquid that you use to prepare it. For a bolder flavor with slightly more body and sweetness, mix one heaping scoop with 8-10 oz of water, milk, or your favorite beverage. For a milder tasting, less sweet shake, use 12-14 oz of liquid per scoop.

Blender: Add one heaping scoop of Gold Standard 100% Casein to a blender filled with 10-12 oz of water, milk, or your favorite beverage. Blend for 20-30 seconds. Then add 3-4 ice cubes and blend for an additional 30 seconds.

Shake Up Your Shake: By adding a few high-energy ingredients to your shake you can blend up a delicious meal: try adding fresh or frozen fruits (strawberries, bananas, peaches, etc.), peanut butter, flaxseed oil, yogurt, coconut, slivered almonds, or other ingredients.

Stack Your Shake: By adding supplements like Micronized Creatine, Glutamine, Taurine, and/or INSTANTIZED BCAA powders, you can make Gold Standard 100% Casein an even more powerful recovery product.

Spoon Stirred: If you forgot your shaker cup or don’t have time to get out the blender, you can just add one heaping scoop of Gold Standard 100% Casein to a glass filled with 10-12 oz of cold water, milk, or your favorite beverage. Then mix it up with a spoon for about 30 seconds or until powder is dissolved.

Suggested Use: Consume approximately 1 gram of protein per pound of body weight per day through a combination of high protein foods and supplements. For best results, consume your daily protein allotment over several small meals spread evenly throughout the day.

Tip: Try using “slower” Gold Standard 100% Casein with “faster” proteins like Gold Standard 100% Whey or Pro Complex at different times for maximum effectiveness. Take Gold Standard 100% Casein immediately before bed and in between meals when delayed protein delivery is desired. Drink Gold Standard 100% Whey or Pro Complex proteins before and immediately after workouts for a rapid “shot” of amino acids.

Warnings: Do not use as a sole source of nutrition for weight loss or maintenance. keep out of reach of children.


  • 1.81 kg
  • Creamy Vanilla
Protein Type
  • Casein Protein
Usage Timings
  • Before Bedtime
  • Powder
Dietary Preference
  • No Cholesterol
  • Protein 24 G, Sodium 240 Mg, Cholestrol 15 Mg, Fat 1 G
Number of Scoops per Container
  • 53-55 scoops
  • No
Shelf Life
  • 24 Months
Container Type
  • Box
Food Preference
  • Vegetarian
Serving Size
  • 24 g
Model Name
  • Gold Standard 100%

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Dosage As Per Individual Requirements Or As Directed By Your Physiciain. See Label For Recommended Dosage.
Ideal For Men, Unisex
Pack Size 2 lbs (907gm)
brand_origin USA
container_type Jar
flavour Chocolate Peanut Butter, Chocolate Supreme, Cookie And Cream, Creamy Vanilla, Raspberry Smoothie
form Powder
lifestage Adult
vegetarian_non_vegetarian Non Vegetarian
protein_usage_timing Post-Workout


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