Optimum Nutrition
1 product scored by Formulate's ingredient-level rubric. Brand grade reflects a weighted average across the full lineup.
Scored by the Formulate Research Team · Last reviewed July 2026
This grade is provisional. Formulate has scored 1 Optimum Nutrition product so far — not enough to judge the brand with confidence. It reflects what has been analysed, not a settled view of the company, and will change as more of its lineup is scored.
How Optimum Nutrition scored
Accurate labels, no proprietary blends hiding doses, consistent sourcing
Ingredient form, bioavailability, dose accuracy across the lineup
Published testing, ingredient origins, full disclosure
USP, NSF, Informed Sport, or comparable third-party testing coverage
New formulations, new forms, research-driven development
Component scores are derived from the product lineup, not from marketing materials. See the methodology page for how each component is computed.
What Optimum Nutrition makes
- 1 Protein
Top-scoring products
Optimum Nutrition: frequently asked questions
How does Formulate grade Optimum Nutrition?
Formulate grades Optimum Nutrition by aggregating the ingredient-level scores of all 1 Optimum Nutrition product it has analyzed — weighing dose accuracy, ingredient form, transparency, and third-party testing. Optimum Nutrition's overall brand grade is C+ (78/100). It is not a paid or sponsored ranking.
Is Optimum Nutrition third-party tested?
Optimum Nutrition scores 83/100 on third-party verification, indicating broad testing coverage (such as USP, NSF, or Informed Sport) across its lineup.
What is Optimum Nutrition's best supplement?
GOLD STANDARD 100% Casein is Optimum Nutrition's highest-scoring product on Formulate at 90/100 (grade A).
What does Optimum Nutrition make?
Formulate has scored 1 Optimum Nutrition product, including 1 Protein.
About the grading
Every Optimum Nutrition product above is scored on dose accuracy, ingredient form, certifications, transparency, and third-party testing. The brand grade aggregates those product scores — it isn't a marketing claim or a pay-for-play ranking. See the methodology page for the full rubric.