Optimum Nutrition Gold Standard Natural 100% Casein French Vanilla supplement bottle
Optimum Nutrition

Gold Standard Natural 100% Casein French Vanilla

What We Researched
10 active ingredients analyzed · 11 inactive ingredients decoded · 9 brand certifications checked · 1 retailer compared · Last updated: Mar 2026
67
Product Score Fair
92
Brand Score Excellent

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Total Carbohydrates 8 g 3%
Vitamin A 0 NP 0%
Vitamin C 0 NP 0%
Calcium 0 NP 40%
Iron 0 NP 0%
Bioavailability Good

Absorption Rating

  • Total Carbohydrates Fair
  • Vitamin A Good
  • Vitamin C Fair
  • Calcium Good
  • Iron Fair
Other Ingredients Excellent

Fillers & Additives

  • Micellar Casein
  • Natural Flavors
  • Honey
  • Powder
  • Inulin
  • Cane Juice
  • Evaporated
  • Lecithin
  • Salt
  • Cellulose Gum
  • Rebaudioside A
Efficacy Very Poor

Dosage Analysis

  • Vitamin A 0 NP Under-dosed
  • Vitamin C 0 NP Under-dosed
  • Calcium 0 NP Under-dosed
  • Iron 0 NP Under-dosed

Supplement Facts

Ingredient Amount % Daily Value
Calories 140 kcal
Total Fat 1 g 2%
Cholesterol 20 mg 7%
Sodium 220 mg 9%
Total Carbohydrates 8 g 3%
Protein 24 g 48%
Vitamin A 0 NP 0%
Vitamin C 0 NP 0%
Calcium 0 NP 40%
Iron 0 NP 0%

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Micellar Casein Generally_safe

It is used as a source of protein.

Natural Flavors Safe

Improves taste of chewable, gummy, or liquid supplements.

Honey Safe

It provides a sweet taste and potential health benefits.

Powder Unknown
Inulin Safe

It is used as a prebiotic fiber and to add bulk to supplements.

Cane Juice Unknown
Evaporated Unknown
Lecithin Safe

It is used as an emulsifier to help mix oil and water-based ingredients.

Salt Safe

It is used as a flavoring agent.

Cellulose Gum Safe

Thickens and stabilizes supplement formulations.

Rebaudioside A Generally_safe

It is used to add sweetness to supplements without adding calories.

Price Comparison

Prices shown at time of last check. Click a retailer to see current price. GoodSupp is not affiliated with any retailer.

Brand Trust Report
Optimum Nutrition

Founded 1986 · Downers Grove, IL, United States · 95 products · optimumnutrition.com

Certifications

9 certifications
Consumerlab Verified Source
Informed Sport Verified Source
Labdoor Verified Source
Nsf Certified For Sport Verified Source
Usda Organic Verified Source
Vegan Certified Verified Source
Fda Gmp Inspections Verified Source
Non Gmo Project Verified Source
Nsf Gmp Verified Source

Transparency

4 claims
Third Party Testing Claim — Verified Source
Testing Lab Disclosure — Claimed Source
In House Testing — Verified Source

Violation History

5 incidents
Prop 65 Lead2025-07-21Source
Prop 65 Lead2024-11-22Source
Recall Various nutritional and beverage products2022-07-28Source
Prop 65 Lead2017-03-10Source
Lawsuit Deceptive claims about the plant-based enzyme 'Aminogen' and its effect on protein digestion and absorption.2013Source
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Frequently Asked Questions
Is Optimum Nutrition Gold Standard Natural 100% Casein French Vanilla a good supplement?

Optimum Nutrition Gold Standard Natural 100% Casein French Vanilla received a product quality score of 67/100 in GoodSupp's independent analysis, suggesting some areas that could be improved. The product contains 10 active ingredients with 49 servings per container. Of the 11 inactive ingredients, 6 are rated safe and 0 are flagged for review. The manufacturer, Optimum Nutrition, holds a brand trust score of 92/100 with 9 verified certifications including Consumerlab, Informed Sport, Labdoor, Nsf Certified For Sport.

What are the ingredients in Optimum Nutrition Gold Standard Natural 100% Casein French Vanilla?

Optimum Nutrition Gold Standard Natural 100% Casein French Vanilla contains 10 active ingredients: Calories (140 kcal), Total Fat (1 g), Cholesterol (20 mg), Sodium (220 mg), Total Carbohydrates (8 g), Protein (24 g), and 4 more. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Optimum Nutrition Gold Standard Natural 100% Casein French Vanilla safe to take?

Optimum Nutrition Gold Standard Natural 100% Casein French Vanilla has been analyzed for ingredient safety across all its components. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

Is Optimum Nutrition a trustworthy supplement brand?

Optimum Nutrition receives a brand trust score of 92/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1986 and headquartered in Downers Grove, IL, United States, the company offers 95 products in their lineup. They hold 9 verified certifications including Consumerlab, Informed Sport, Labdoor, Nsf Certified For Sport. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Optimum Nutrition has 5 historical regulatory incidents on record, which are factored into the trust score.

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Disclaimer: GoodSupp provides independent supplement quality analysis for informational purposes only. Scores are generated algorithmically based on ingredient profiles, brand certifications, and public records. This is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Product data is sourced from manufacturer labels and public databases. GoodSupp is not affiliated with any supplement brand.