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Optimum Nutrition Gold Standard 100% Isolate Whey Protein 5 lbs
Optimum Nutrition Gold Standard 100% Isolate Whey Protein 5 lbs
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Optimum Nutrition Gold Standard 100% Isolate Whey Protein is a whey protein powder where all of the protein comes from whey protein isolate, including hydrolysed whey protein isolate. A 31 g scoop of Chocolate Bliss gives 25 g of protein with 1 g of carbohydrate and 0.5 g of fat. It suits anyone who wants a lean shake after training or between meals, in Chocolate Bliss or Rich Vanilla.
Key features
- 25 g of protein per 31 g scoop (Chocolate Bliss)
- Protein from hydrolysed whey protein isolate and whey protein isolate only
- 5.5 g of naturally occurring BCAAs per serve, according to Optimum Nutrition
- 110 Calories, 1 g of carbohydrate and 0.5 g of fat per serve (Chocolate Bliss)
- Gluten free and banned substance tested, according to Optimum Nutrition
- Sweetened with sucralose
Nutrition information
Per 31 g serve (Chocolate Bliss, US label). The US label lists energy in Calories, not kJ. Values vary slightly between flavours.
| Nutrient | Per serve |
|---|---|
| Energy | 110 Cal |
| Protein | 25 g |
| Fat, total | 0.5 g |
| Saturated | Not a significant source |
| Cholesterol | Less than 5 mg |
| Carbohydrate | 1 g |
| Sugars | Not a significant source |
| Sodium | 190 mg |
| Calcium | 150 mg |
| Iron | 0.5 mg |
| Potassium | 240 mg |
Ingredients
Chocolate Bliss: Hydrolysed Whey Protein Isolate, Whey Protein Isolate, Cocoa (Processed with Alkali), Natural and Artificial Flavour, Lecithin, Salt, Sucralose.
Allergens: contains milk and soy.
How to use
Mix 1 scoop (31 g) with 6 to 8 fl oz (about 180 to 240 ml) of cold water, milk or another drink. Stir, shake or blend until dissolved. The label suggests having your shake 30 to 60 minutes after your workout or as an anytime snack in a balanced diet.
Good to know
- Contains milk and soy.
- Gluten free, according to Optimum Nutrition.
- The label's suggested use is for healthy adults, as part of a balanced diet and exercise program.
- Chocolate Bliss and Rich Vanilla are US-labelled flavours, so the panel uses the US Nutrition Facts format.
- If you are pregnant, breastfeeding or have a medical condition, talk to your healthcare professional before use.
- Store in a cool, dry place with the lid closed.
FAQs
How much protein is in one scoop?
Each 31 g scoop of Chocolate Bliss has 25 g of protein, which is about 80% protein by weight. All of it comes from whey protein isolate and hydrolysed whey protein isolate, with 1 g of carbohydrate and 0.5 g of fat per serve.
Is it lactose free?
It is not labelled lactose free. Isolate is filtered to leave minimal carbohydrate and fat, as the AIS protein fact sheet explains, and Chocolate Bliss has just 1 g of carbohydrate per serve. It still contains milk and soy, so it does not suit anyone allergic to either.
How many serves are in the 5 lb tub?
Optimum Nutrition lists 44 serves for its 3 lb Chocolate Bliss tub at 31 g per scoop. A 5 lb (about 2.27 kg) tub works out to roughly 73 serves at the same scoop size. Check the count printed on your tub, as net weight differs slightly between flavours.
What does hydrolysed whey mean?
Hydrolysed whey has been processed further to break proteins into shorter peptides, which is often described as pre-digested. The AIS protein fact sheet notes the practical difference between whey forms is small. Compare more options in our whey protein isolate range.
Label details checked against Optimum Nutrition (US label) 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% Isolate Whey Protein 5 lbs
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% Isolate Whey Protein is a whey protein powder where all of the protein comes from whey protein isolate, including hydrolysed whey protein isolate. A 31 g scoop of Chocolate Bliss gives 25 g of protein with 1 g of carbohydrate and 0.5 g of fat. It suits anyone who wants a lean shake after training or between meals, in Chocolate Bliss or Rich Vanilla.
Key features
- 25 g of protein per 31 g scoop (Chocolate Bliss)
- Protein from hydrolysed whey protein isolate and whey protein isolate only
- 5.5 g of naturally occurring BCAAs per serve, according to Optimum Nutrition
- 110 Calories, 1 g of carbohydrate and 0.5 g of fat per serve (Chocolate Bliss)
- Gluten free and banned substance tested, according to Optimum Nutrition
- Sweetened with sucralose
Nutrition information
Per 31 g serve (Chocolate Bliss, US label). The US label lists energy in Calories, not kJ. Values vary slightly between flavours.
| Nutrient | Per serve |
|---|---|
| Energy | 110 Cal |
| Protein | 25 g |
| Fat, total | 0.5 g |
| Saturated | Not a significant source |
| Cholesterol | Less than 5 mg |
| Carbohydrate | 1 g |
| Sugars | Not a significant source |
| Sodium | 190 mg |
| Calcium | 150 mg |
| Iron | 0.5 mg |
| Potassium | 240 mg |
Ingredients
Chocolate Bliss: Hydrolysed Whey Protein Isolate, Whey Protein Isolate, Cocoa (Processed with Alkali), Natural and Artificial Flavour, Lecithin, Salt, Sucralose.
Allergens: contains milk and soy.
How to use
Mix 1 scoop (31 g) with 6 to 8 fl oz (about 180 to 240 ml) of cold water, milk or another drink. Stir, shake or blend until dissolved. The label suggests having your shake 30 to 60 minutes after your workout or as an anytime snack in a balanced diet.
Good to know
- Contains milk and soy.
- Gluten free, according to Optimum Nutrition.
- The label's suggested use is for healthy adults, as part of a balanced diet and exercise program.
- Chocolate Bliss and Rich Vanilla are US-labelled flavours, so the panel uses the US Nutrition Facts format.
- If you are pregnant, breastfeeding or have a medical condition, talk to your healthcare professional before use.
- Store in a cool, dry place with the lid closed.
FAQs
How much protein is in one scoop?
Each 31 g scoop of Chocolate Bliss has 25 g of protein, which is about 80% protein by weight. All of it comes from whey protein isolate and hydrolysed whey protein isolate, with 1 g of carbohydrate and 0.5 g of fat per serve.
Is it lactose free?
It is not labelled lactose free. Isolate is filtered to leave minimal carbohydrate and fat, as the AIS protein fact sheet explains, and Chocolate Bliss has just 1 g of carbohydrate per serve. It still contains milk and soy, so it does not suit anyone allergic to either.
How many serves are in the 5 lb tub?
Optimum Nutrition lists 44 serves for its 3 lb Chocolate Bliss tub at 31 g per scoop. A 5 lb (about 2.27 kg) tub works out to roughly 73 serves at the same scoop size. Check the count printed on your tub, as net weight differs slightly between flavours.
What does hydrolysed whey mean?
Hydrolysed whey has been processed further to break proteins into shorter peptides, which is often described as pre-digested. The AIS protein fact sheet notes the practical difference between whey forms is small. Compare more options in our whey protein isolate range.
Label details checked against Optimum Nutrition (US label) 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.




