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Optimum Nutrition Gold Standard 100% Casein Protein
Optimum Nutrition Gold Standard 100% Casein Protein
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Optimum Nutrition Gold Standard 100% Casein Protein is a slow-digesting protein powder where all the protein comes from micellar casein. Each 34 g scoop of Chocolate Supreme gives 24 g of protein, 1 g of sugars and 120 Calories. Optimum Nutrition suggests it before bed or between meals. Supps247 stocks 2 lb and 4 lb tubs in four flavours.
Key features
- 24 g protein per scoop, with 100% of the protein from micellar casein
- Nearly 5 g naturally occurring BCAAs per serve, according to Optimum Nutrition
- 120 Calories, 4 g carbohydrate, 1 g sugars and 1 g fat per serve (Chocolate Supreme)
- 540 mg calcium per serve (Chocolate Supreme)
- Informed Choice certified, according to Optimum Nutrition
- About 25 serves per 2 lb tub and 53 serves per 4 lb tub
Nutrition information
Per 34 g scoop (Chocolate Supreme). Values vary slightly between flavours.
| Nutrient | Per serve |
|---|---|
| Energy | 120 Cal (about 500 kJ) |
| Protein | 24 g |
| Fat, total | 1 g |
| Saturated fat | 0.5 g |
| Cholesterol | 15 mg |
| Carbohydrate | 4 g |
| Dietary fibre | 1 g |
| Sugars | 1 g |
| Added sugars | 0 g |
| Sodium | 290 mg |
| Calcium | 540 mg |
| Iron | 1.2 mg |
| Potassium | 200 mg |
Energy is declared in Calories on the panel and the kJ figure is converted.
Ingredients
Chocolate Supreme: micellar casein, cocoa powder (processed with alkali), natural and artificial flavour, salt, gum blend (cellulose gum, xanthan gum, carrageenan), lecithin, acesulfame potassium, sucralose, protease (Aminogen®).
Allergens: contains milk and soy.
How to use
Mix one rounded scoop in 300 to 360 mL of cold water or milk using a shaker, and stir, shake or blend for about 30 seconds or until dissolved. Optimum Nutrition suggests having it before bed or between meals.
Good to know
- Contains milk and soy.
- Optimum Nutrition advises healthy adults to meet daily protein needs with a mix of high protein foods and supplements, as part of a balanced diet and exercise program.
- Net weight varies slightly by flavour. Check the label on your tub.
FAQs
Why take casein before bed?
Optimum Nutrition describes casein as a slower digesting and absorbing protein, so it positions this product for before bed or between meals, when you go longer without food. Each scoop adds 24 g of protein to your daily intake.
How many serves are in each size?
Australian listings show about 25 serves in the 2 lb tub (around 825 to 850 g, depending on flavour) and 53 serves in the 4 lb tub (around 1.75 to 1.8 kg). Check the label on your tub, as net weight varies by flavour.
Can I mix it with milk?
Yes. Optimum Nutrition suggests one rounded scoop in 300 to 360 mL of cold water or milk. Milk adds its own protein, carbohydrate and energy, so the label values apply when it is mixed with water.
Is it suitable if I am lactose intolerant?
Casein is a milk protein and the label states it contains milk and soy. It is not suitable for anyone with a milk allergy. If you are lactose intolerant, check with your health professional before use. See more in our casein protein range.
Label details checked against Optimum Nutrition Australia on 9 October 2026. Formulas can change, so always check the label on the product you buy.
Always read the label and follow the directions for use.
Free standard shipping on orders of $99.99 AUD or more within Australia.
Orders under $99.99 ship for a flat $12.98 AUD.
Delivery estimates are shown at checkout. In-store pickup is available at our Melbourne stores.
Optimum Nutrition Gold Standard 100% Casein Protein
We'll email you once when this option is back online. You can also check stock at your nearest Supps247 store.
Done. We'll email you when it's back in stock.
Sorry, that didn't go through. Please check your email address and try again.
Optimum Nutrition Gold Standard 100% Casein Protein is a slow-digesting protein powder where all the protein comes from micellar casein. Each 34 g scoop of Chocolate Supreme gives 24 g of protein, 1 g of sugars and 120 Calories. Optimum Nutrition suggests it before bed or between meals. Supps247 stocks 2 lb and 4 lb tubs in four flavours.
Key features
- 24 g protein per scoop, with 100% of the protein from micellar casein
- Nearly 5 g naturally occurring BCAAs per serve, according to Optimum Nutrition
- 120 Calories, 4 g carbohydrate, 1 g sugars and 1 g fat per serve (Chocolate Supreme)
- 540 mg calcium per serve (Chocolate Supreme)
- Informed Choice certified, according to Optimum Nutrition
- About 25 serves per 2 lb tub and 53 serves per 4 lb tub
Nutrition information
Per 34 g scoop (Chocolate Supreme). Values vary slightly between flavours.
| Nutrient | Per serve |
|---|---|
| Energy | 120 Cal (about 500 kJ) |
| Protein | 24 g |
| Fat, total | 1 g |
| Saturated fat | 0.5 g |
| Cholesterol | 15 mg |
| Carbohydrate | 4 g |
| Dietary fibre | 1 g |
| Sugars | 1 g |
| Added sugars | 0 g |
| Sodium | 290 mg |
| Calcium | 540 mg |
| Iron | 1.2 mg |
| Potassium | 200 mg |
Energy is declared in Calories on the panel and the kJ figure is converted.
Ingredients
Chocolate Supreme: micellar casein, cocoa powder (processed with alkali), natural and artificial flavour, salt, gum blend (cellulose gum, xanthan gum, carrageenan), lecithin, acesulfame potassium, sucralose, protease (Aminogen®).
Allergens: contains milk and soy.
How to use
Mix one rounded scoop in 300 to 360 mL of cold water or milk using a shaker, and stir, shake or blend for about 30 seconds or until dissolved. Optimum Nutrition suggests having it before bed or between meals.
Good to know
- Contains milk and soy.
- Optimum Nutrition advises healthy adults to meet daily protein needs with a mix of high protein foods and supplements, as part of a balanced diet and exercise program.
- Net weight varies slightly by flavour. Check the label on your tub.
FAQs
Why take casein before bed?
Optimum Nutrition describes casein as a slower digesting and absorbing protein, so it positions this product for before bed or between meals, when you go longer without food. Each scoop adds 24 g of protein to your daily intake.
How many serves are in each size?
Australian listings show about 25 serves in the 2 lb tub (around 825 to 850 g, depending on flavour) and 53 serves in the 4 lb tub (around 1.75 to 1.8 kg). Check the label on your tub, as net weight varies by flavour.
Can I mix it with milk?
Yes. Optimum Nutrition suggests one rounded scoop in 300 to 360 mL of cold water or milk. Milk adds its own protein, carbohydrate and energy, so the label values apply when it is mixed with water.
Is it suitable if I am lactose intolerant?
Casein is a milk protein and the label states it contains milk and soy. It is not suitable for anyone with a milk allergy. If you are lactose intolerant, check with your health professional before use. See more in our casein protein range.
Label details checked against Optimum Nutrition Australia on 9 October 2026. Formulas can change, so always check the label on the product you buy.
Always read the label and follow the directions for use.
Free standard shipping on orders of $99.99 AUD or more within Australia.
Orders under $99.99 ship for a flat $12.98 AUD.
Delivery estimates are shown at checkout. In-store pickup is available at our Melbourne stores.




