Gold Standard 100% Casein 924g/1.82kg

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Support Muscle Growth & Repair Overnight

Optimum Nutrition GOLD STANDARD 100% CASEIN™ is a slow digesting protein that supports muscle growth and repair while you sleep. 

Each serving is packed with 24g of pure Micellar Casein, providing a slow release of amino acids around the clock.

Our latest formula is now fortified with zinc, which contributes to a healthy immune system and magnesium to support normal protein synthesis.

Casein Protein is ideal for night-time nutrition (before bed), between meals or for extended periods without food.


  • 24 g of Pure Micellar Casein with 0.7 g of fat and no added sugars (Chocolate supreme flavour)

  • Slowly digested casein for round the clock protein coverage

  • Protein Supports Muscle Growth and Maintenance

  • Banned substance tested

Mix 1 rounded scoop in 300-360 ml of cold water. Enjoy before bed to support muscle growth while you sleep.You can also add a serving to smoothies, protein balls, muffins, porridge or other meals as another great way to get a protein hit in the kitchen.