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Optimum Nutrition

Founded 1986 · Downers Grove, IL, United States · 311 products · optimumnutrition.com

What We Researched

GoodSupp reviewed 9 sources for Optimum Nutrition. The evidence below covers testing publisher listings, company statements or public records found during that review.

359 products in the catalog · Last checked:

We checked company information, testing publishers, certification directories and public regulatory records.

Public evidence for Optimum Nutrition
SourceFindings
ConsumerLabConsumerLab's public Tested Brands table lists Optimum Nutrition with 2 tested products. Approval and Top Pick outcomes are masked behind membership and were not inferred.
LabdoorOptimum Nutrition Glutamine — A; Optimum Nutrition Melatonin — A. Search results can be fuzzy; only exact brand-title matches were accepted.
FDA warning letters/recallsOptimum Nutrition products appear in Lyons Magnus's multi-brand recall table for potential microbial contamination, including Cronobacter sakazakii and Clostridium botulinum. FDA's page says the recall was later terminated.
Health Canada LNHPDHealth Canada lists 12 product records for Optimum Nutrition. Sample registry row: 80004016 — Optimum Nutrition Glutamine Powder — Active. Registry inclusion is product/entity scoped and does not establish independent testing.

Company statements are identified as claims. Publisher listings and regulatory records apply to the products, facilities and dates described. A missing public listing does not establish that testing never occurred.

100
Brand Score

Certifications

10 certifications
Consumerlab Source available Primary evidence
Informed Sport Source available Primary evidence
Labdoor Source available Primary evidence
Nsf Certified For Sport Source available Primary evidence
Usda Organic Source available Primary evidence
Vegan Certified Source available Primary evidence
Fda Gmp Inspections Source available Primary evidence
Non Gmo Project Source available Primary evidence
Nsf Gmp Source available Primary evidence
Informed Choice Supporting evidence unavailable

Transparency Claims

5 claims
Third Party Testing Claim — Evidence available Evidence
Testing Lab Disclosure — Evidence available Evidence
In House Testing — Evidence available Evidence
Contains Proprietary Blend — Brand claim; evidence unavailable

Violation History

5 incidents
Prop 65 Lead2025-07-21 Source available Primary source
Prop 65 Lead2024-11-22 Source available Primary source
Recall Various nutritional and beverage products2022-07-28 Source available Primary source
Prop 65 Lead2017-03-10 Source available Primary source
Lawsuit Deceptive claims about the plant-based enzyme 'Aminogen' and its effect on protein digestion and absorption.2013 Source available Primary source
Products by Optimum Nutrition
CoQ10 100 mg
CoQ10 100 mg
Product 100 Brand 100
Micronized Creatine
Micronized Creatine
Product 100 Brand 100
Glucosamine + CSA Super Strength
Glucosamine + CSA Super Strength
Product 100 Brand 100
Micronized Creatine Powder Unflavored
Micronized Creatine Powder Unflavored
Product 100 Brand 100
Glutamine Powder Unflavored
Glutamine Powder Unflavored
Product 100 Brand 100
Flaxseed Oil Softgels
Flaxseed Oil Softgels
Product 100 Brand 100
Micronized Creatine Powder Unflavored
Micronized Creatine Powder Unflavored
Product 100 Brand 100
Thermo Cuts
Thermo Cuts
Product 100 Brand 100
Micronized Creatine Powder Unflavored
Micronized Creatine Powder Unflavored
Product 100 Brand 100
Opti-Pump N.O
Opti-Pump N.O
Product 100 Brand 100
Micronized Creatine Powder Unflavored
Micronized Creatine Powder Unflavored
Product 100 Brand 100
Glutamine Powder, Unflavored
Glutamine Powder, Unflavored
Product 100 Brand 100
Glutamine Powder, Unflavored, 2.2 lbs
Glutamine Powder, Unflavored, 2.2 lbs
Product 100 Brand 100
Micronized Creatine Powder, Unflavored
Micronized Creatine Powder, Unflavored
Product 100 Brand 100
Micronized Creatine Powder Blueberry Lemonade
Micronized Creatine Powder Blueberry Lemonade
Product 100 Brand 100
Micronized Creatine Powder, Unflavored
Micronized Creatine Powder, Unflavored
Product 100 Brand 100
100 mg Vitamin B
100 mg Vitamin B
Product 98 Brand 100
Vitamin B-2 Tablets, 25 Mg
Vitamin B-2 Tablets, 25 Mg
Product 98 Brand 100
Vitamin B Complex Tablets
Vitamin B Complex Tablets
Product 98 Brand 100
Acidophilus Lactobacilli Capsules
Acidophilus Lactobacilli Capsules
Product 93 Brand 100
Zinc Magnesium Aspartate
Zinc Magnesium Aspartate
Product 93 Brand 100
100% Whey Delicious Strawberry
100% Whey Delicious Strawberry
Product 93 Brand 100
Gold Standard 100% Whey Extreme Milk Chocolate
Gold Standard 100% Whey Extreme Milk Chocolate
Product 93 Brand 100
Gold Standard Pre-Workout
Gold Standard Pre-Workout
Product 93 Brand 100
Isomaltulose Unflavored
Isomaltulose Unflavored
Product 93 Brand 100
Zinc Magnesium Aspartate Capsules
Zinc Magnesium Aspartate Capsules
Product 93 Brand 100
Zinc Magnesium Aspartate
Zinc Magnesium Aspartate
Product 93 Brand 100
Gold Standard 100% Whey (Cookies & Cream
Gold Standard 100% Whey (Cookies & Cream
Product 75 Brand 100
Gold Standard 100% Whey Cookies & Cream
Gold Standard 100% Whey Cookies & Cream
Product 75 Brand 100
Gold Standard 100% Whey Cookies & Cream
Gold Standard 100% Whey Cookies & Cream
Product 75 Brand 100
Superior Amino 2222
Superior Amino 2222
Product 75 Brand 100
Gold Standard Pre-Workout Watermelon Candy
Gold Standard Pre-Workout Watermelon Candy
Product 73 Brand 100
Serious Mass Strawberry
Serious Mass Strawberry
Product 72 Brand 100
Gold Standard 100% Whey Extreme Milk Chocolate
Gold Standard 100% Whey Extreme Milk Chocolate
Product 70 Brand 100
Gold Standard 100% Whey Extreme Milk Chocolate
Gold Standard 100% Whey Extreme Milk Chocolate
Product 70 Brand 100
Whey Gold Standard
Whey Gold Standard
Product 68 Brand 100
Gold Standard 100% Whey Extreme Milk Chocolate
Gold Standard 100% Whey Extreme Milk Chocolate
Product 67 Brand 100
Gold Standard 100% Whey Extreme Milk Chocolate
Gold Standard 100% Whey Extreme Milk Chocolate
Product 66 Brand 100
Gold Standard 100% Whey Extreme Milk chocolate
Gold Standard 100% Whey Extreme Milk chocolate
Product 66 Brand 100
Creatine 300G
Creatine 300G
Product 66 Brand 100
Creatine 300G
Creatine 300G
Product 66 Brand 100
Serious Mass
Serious Mass
Product 62 Brand 100
Serious Mass
Serious Mass
Product 58 Brand 100
Whey Gold Standard
Whey Gold Standard
Product 50 Brand 100
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Frequently Asked Questions
What testing evidence is available for Optimum Nutrition?

The September 3, 2026 review found public listings from ConsumerLab, Labdoor. The evidence table identifies the products or company listings covered. A publisher listing does not mean every product has passed testing.

What are the best Optimum Nutrition supplements?

Based on GoodSupp's quality analysis, the highest-rated Optimum Nutrition supplements are: CoQ10 100 mg (score: 100/100); Micronized Creatine (score: 100/100); Glucosamine + CSA Super Strength (score: 100/100). These scores are calculated from ingredient quality, dosage adequacy, bioavailability, label transparency, and inactive ingredient safety. Scores can vary significantly across a brand's product line — a high brand trust score doesn't guarantee every individual product is top-quality.

Where is Optimum Nutrition located?

Optimum Nutrition is headquartered in Downers Grove, IL, United States. The company was founded in 1986. They currently offer 311 products in their supplement lineup. Their official website is optimumnutrition.com. Manufacturing location may differ from corporate headquarters — look for GMP certification to verify manufacturing quality standards.

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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 — read our methodology. 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.