Complete Product Guide
Optimum Nutrition Gold Standard 100% Casein
Gold Standard 100% Casein uses micellar casein, a milk-derived protein that digests more slowly than whey. The current formulas provide 24 g of protein per serving and are designed for times when a longer gap between meals is expected.
Its thicker texture makes it a satisfying evening shake or between-meal option. It is especially useful for customers who already understand their daily protein target and want a slower-digesting alternative to whey.
Why choose this product?
- 24 g of micellar casein protein per serving on current formulas.
- Slower-digesting than whey, making it suitable for longer gaps between meals.
- 9 g of naturally occurring essential amino acids per serving on current official formulas.
- A thick, satisfying texture that can be adjusted with more or less liquid.
- Current formulas provide magnesium and zinc; exact amounts vary by market and flavor.
Who is it for?
Best for active adults who want a slow-digesting protein before bed, between meals, or whenever the next meal will be several hours away.
How to use
Current UK guidance is to mix about 33 g, roughly one heaped scoop, with 300–360 ml of cold water. Use less liquid for a thicker shake. It can be taken before bed or between meals; follow the scoop and liquid amount printed on your pack.
How to choose the right option
Choose the flavor and pack size by reading the exact net weight and serving count. Casein makes a thicker shake than whey, so also choose it only if you enjoy a creamier, denser texture.
Available flavors and sizes
This product is available in 2 flavor or package options. Choose the right option before adding it to your cart.
- Available flavors: Chocolate, Vanilla
- Package sizes: 850 g
- Servings by package: 25
Important information before use
- Contains milk. Depending on flavor and market, it may contain or carry traces of gluten, egg, soy, nuts, or peanuts.
- Pack weight, scoop size, nutrition, and serving count vary by edition; do not calculate servings from weight alone.
- Use as part of a varied diet and an appropriate daily protein plan.
Specifications
| Flavor | Chocolate, Vanilla |
| Brand | Optimum Nutrition |
| Package / Net Weight | 850 g |
| Form | Powder |
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