Optimum Nutrition · Protein
Optimum Nutrition Gold Standard 100% Casein
Label read twice, dated Sep 2026 · checked weeklyLast valid check Nov 1, 2026
Save to my LockerLabels
The labels, dated
One documented label. Read twice, dated, kept.
Dates are when we observed each label, not when it was made or shipped.
Current label, Chocolate Supreme read Sep 21, 2026
- Calcium500 mg
- Iron1.5 mg
- Potassium230 mg
- Magnesium85 mg
- Zinc11 mg
No earlier label has been recovered yet. A missing observation is not proof nothing changed.
What it means
The label you can check against.
What we found
The panel the brand published on Sep 21, 2026 was read twice, independently, and every compared field agreed. It declares 5 dosed lines. No confirmed formula change is on file for this product.
What we can’t tell you yet
A missing earlier label is not proof nothing changed, and a product record never establishes what is inside a particular tub. Dates are observation dates, not manufacture dates.
Signal Verified, here
What we checked. What we haven’t yet.
- Checked: Label read twice50 of 50 fields agreed on the Chocolate Supreme panel from optimumnutrition.com, dated Sep 21, 2026.
- Not yet: FlavorsRead: Chocolate Supreme. 3 of 4 flavors on the store are not read yet.
- Not yet: Where it's soldBrand's own store only. Retail labels have not been compared.
- Not yet: Earlier labels1 dated label on file. The archive search is not complete, so an earlier label may exist.
- Checked: MarketUS market only.
- Checked: Kept currentRechecked within 365 days. If it is not re-verified by Sep 21, 2027, the status comes off.
Label read twice. Both readings agree. Not a laboratory test, safety certification, or endorsement of the product. How Signal Verified works
Monitoring
How we keep it current
Checked weekly
Last checked Nov 1, 2026.
- No change detected in this reading
- No change detected in this reading
- No change detected in this reading
Earlier checks
- No change detected in this reading
- No change detected in this reading
These are the Record’s own checks, not checks run for your account before you watched it.
FRESH CHECK
Buying again soon? Send this product to the front of the line and we’ll check the brand’s page again.
What a fresh check covers
Requests bring a source check forward. They do not scan your tub, guarantee a result, or start a subscription. Requests for the same product share a monitoring pass. Allowances reset monthly in UTC; guest allowances are shared by people on the same connection.
Formula
What's in it
The declared formula
Current formula observed September 21, 2026.
Nutrition Facts as printed for Chocolate Supreme, observed September 21, 2026.
- Protein per serving
- 24 g in a 34 g serving
- Serving size
- 34g (About 1 Scoop)
- Servings per container
- 25
- Calories
- 120
- Total carbohydrate
- 4 g
- Total sugars
- 1 g
- Added sugars
- 0 g
- Total fat
- 1 g
- Formula scope
- flavor specific
- Declared protein sources
- Micellar Casein. In the order the ingredient statement lists them; the label gives no amount for each.
- Allergen statement
- “CONTAINS: MILK AND SOY.”
| Printed line | Share of the heaviest line | Amount |
|---|---|---|
| Calories | 120 kcal | |
| Total Fat | 1 g | |
| Cholesterol | 15 mg | |
| Sodium | 260 mg | |
| Total Carbohydratetotal carbohydrates | 4 g | |
| Dietary Fiber | 1 g | |
| Total Sugars | 1 g | |
| Includes Added Sugarsadded sugars | 0 g | |
| Protein | 24 g | |
| Calcium | 500 mg | |
| Iron | 1.5 mg | |
| Potassium | 230 mg | |
| Magnesium | 85 mg | |
| Zinc | 11 mg |
What it costs
Serving economics
What it costs
- $57.49Price shownObserved September 21, 2026
- 25Servings per containerCaptured with the price
- $2.30Per serving$57.49 ÷ 25 = $2.30 per serving
- $0.096 per gram of proteinPrice per gram of proteinFormulaSignal calculated this from $2.30 per serving and 24 g of protein per serving. The brand does not print it.
The price is a captured fact. The per-serving figures are FormulaSignal's arithmetic on it. Price never decides whether a label is Signal Verified.
Use your own numbers
Check the cost of your tub.
Use the price you paid and your label’s protein grams. If you have a matching lab report, the unit converter keeps its reporting limits intact; this Record does not establish heavy metal levels in your tub.
Where to buy
Buy it, knowing which label you are getting.
Compare the label on the listing or the tub with the dated one above.
As an Amazon Associate FormulaSignal earns from qualifying purchases. The link goes to the Amazon listing for this product. It is not a recommendation, and it cannot change anything the Record says or how anything is ordered. Choose the flavor and size on the seller’s page; this link does not establish the price or package shown in the Record. A listing can show an older label, so compare its label photo before you buy.
Sources
Evidence
Sources you can open. Each one dated.
Brand's own pageSep 21, 2026
The label shown here, read twice: 50 of 50 fields agreed
Optimum Nutrition · optimumnutrition.com (opens in a new tab)
Cautions and filings
The rest of the Record
Also checked
Formula history
No confirmed change on file. Historical evidence is not yet enough to compare, which does not establish that the product never changed.
Research context
Qualifying research context is unavailable for the current public formula.
Cautions and regulatory records
No documented caution is recorded against the declared ingredients on this Record. That is not a finding that the product is safe.
Source conflicts
No source conflict is recorded on this Record. That is not a claim that every source agrees, only that none we read disagreed.
Common questions
Questions
Optimum Nutrition GOLD STANDARD 100% Casein: common questions
What are the ingredients in Optimum Nutrition GOLD STANDARD 100% Casein?
The label observed September 21, 2026 declares 9 lines. The actives: Cholesterol (15 mg), Dietary Fiber (1 g), Protein (24 g), Iron (1.5 mg). Vitamins, minerals and electrolytes are in the full table.
How much does Optimum Nutrition GOLD STANDARD 100% Casein cost per serving?
$2.30: $57.49 for 25 servings, observed September 21, 2026 (the price shown). About $49.83 a month at five uses a week.
Has Optimum Nutrition GOLD STANDARD 100% Casein changed its formula?
FormulaSignal has not confirmed a change. That is a statement about the evidence on file, not a finding that the formula never changed.
Is Optimum Nutrition GOLD STANDARD 100% Casein good?
FormulaSignal does not score products or say whether one works. What the label shows: 9 of 9 ingredient lines disclose an amount; and at $2.30 a serving it ranks 523 of 627 covered products with an observed price, cheapest first. Whether it suits you depends on your budget and what you avoid.