Optimum Nutrition Gold Standard 100% Casein Protein Chocolate Peanut Butter 909g

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 Gold Standard 100% Casein to be broken down into its amino acid sub-components. By using only premium micellar casein as a protein source, Optimum Nutrition have created a formula that sets the standard for slow digesting protein support.


  • Optimum Nutrition Gold Standard 100% Casein Protein 909g
  • Flavour: Chocolate Peanut Butter
  • 24g of protein per serve
  • 120 calories per serve
  • Slow digesting protein formula
  • 24g of Anti-Catabolic Micellar Casein
  • Nearly 5g of naturally occurring BCAAs per scoop
  • Nearly 5g of naturally occurring glutamine and glutamic acid per scoop
  • Expiry Date: 31/05/2022
  • Country of origin: N/A
  • Please note: contains milk and soy


  • Adults: Add 1 heaped scoop to 250-300mL of cold water, milk or a beverage of your choice and stir, shake or blend to combine


  • Always read the label
  • Use only as directed
  • Dietary supplements should not replace a balanced diet
A Bit About The Brand / More Info

The world’s best selling protein supplement, Optimum Nutrition products are a cut above the rest, made with rigorously tested, premium raw materials, including whey and casein, in delicious flavours. With 20 grams of pure protein per serve, Optimum Nutrition is perfect for fitness fanatics and everyday gym-goers - let the gains begin and achieve your fitness goals!