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Optimum Nutrition
Gold Standard 100% Isolate
Our analysis — editorial take, not from the label
A minimal-carb, minimal-fat whey isolate (0.5 g fat, 1 g carb) delivering 25 g protein per 31 g scoop; no third-party banned-substance certification mark could be confirmed on the current label.
- Protein
- 25 g
- Protein by weight
- 81%
- Source
- whey isolate
- Servings
- 44
Price tier: Mid-range · relative cost per full serving across this database
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Sold in Chocolate Bliss and Rich Vanilla, both naturally and artificially flavored and sweetened with sucralose.
Label verified: July 2026 · View supplement facts image
Label data
Per full serving · 44 servings per container · from the manufacturer's panel
| Protein per serving | 25 g |
|---|---|
| Serving size | 31 g |
| Protein per scoop | 81% |
| Calories | 110 |
| Total carbohydrate | 1 g |
| Total fat | 0.5 g |
| Source | whey isolate |
| Sweetener | sucralose |
| Whey Protein Isolate (plus Hydrolyzed Whey Protein Isolate) | 25 g per scoop |
| Branched-Chain Amino Acids (naturally occurring) | 5.5 g per scoop |
| Proprietary blend | No |
Primary label source: Optimum Nutrition — official product page (Supplement Facts panel image) · verified July 2026
Cautions
- Contains milk and soy (soy lecithin).
- Sweetened with sucralose; the label does not disclose the exact amount.
Formulated for healthy adults — not intended for anyone under 18. Full health & safety notes
Product details
Where this label sits
Optimum Nutrition Gold Standard 100% Isolate is one of the protein powders in the Scoop Sense database. Every active ingredient on the panel is listed with its own dose — nothing is hidden inside a blend total. It runs 44 servings per container at the full labeled serving. Everything on this page comes from the manufacturer's supplement facts panel as of July 2026 — never from the marketing page.
Key ingredients & studied doses
- Whey Protein Isolate (plus Hydrolyzed Whey Protein Isolate) · 25 g per scoop. Whey protein is a complete, fast-digesting protein studied for supporting normal muscle protein synthesis after exercise.
- Branched-Chain Amino Acids (naturally occurring) · 5.5 g per scoop. BCAAs occur naturally in whey and have been studied for their contribution to normal muscle recovery.
Flavors & sweetener
Sold in Chocolate Bliss and Rich Vanilla, both naturally and artificially flavored and sweetened with sucralose.
Who it's best for
A lean-ratio pick — at least 80% of each scoop is protein, which suits anyone counting calories closely. Derived from the label figures above — not medical advice.
How we log this label
Every entry is built the same way: we read the current supplement facts panel, log each disclosed dose, compare it against the amounts used in published research, flag proprietary blends, and state the cautions plainly. The full methodology explains each step.
This label against the research
How we evaluate labelsEach bar shows the amount commonly used in published human research, and where this label's dose falls against it. Research amounts are context, not a recommendation — they are not doses, and nothing here is medical advice.
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Protein25 g
At or above the studied amount0studied range 20 g–40 g50 g
Per-meal doses studied for muscle protein synthesis run about 20–40 g of high-quality protein, with the upper half of that range favoured for larger athletes and older adults.
Source: Jäger et al., Journal of the International Society of Sports Nutrition 2017 — “General recommendations are 0.25 g of a high-quality protein per kg of body weight, or an absolute dose of 20–40 g.”
Common questions about Optimum Nutrition Gold Standard 100% Isolate
How much of a Optimum Nutrition Gold Standard 100% Isolate scoop is actually protein?
25 g of protein from a 31 g serving — about 81%. The rest is flavoring, fats, carbs, and whatever else the label lists. A higher percentage means less filler per scoop.
Does Optimum Nutrition Gold Standard 100% Isolate disclose every dose?
Yes — the label lists an individual amount for each ingredient, with no proprietary blends. That is what the "label fully disclosed" tag on Scoop Sense means, and it is what lets each dose be compared against the amounts used in published research.