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Optimum Nutrition vs Thorne Creatine Monohydrate (2026)
Disclosure: We earn commissions on purchases made through our links. This never influences our scores. Editorial policy
The Verdict
Both products score A overall - one of the few ties at the top of any category. Optimum Nutrition edges Thorne on value, and both carry strong third-party certifications (Informed Choice vs NSF Certified for Sport). For competitive athletes who need NSF Certified for Sport specifically, Thorne is the safer bet. For everyone else, Optimum Nutrition delivers identical results at a lower daily cost.
Micronized Creatine Monohydrate Powder
Optimum Nutrition
Creatine (Creapure)
Thorne
Head-to-Head Comparison
| Category | Micronized Creatine Monohydrate Powder Optimum Nutrition | Creatine (Creapure) Thorne |
|---|---|---|
| Brand Score | 91/100Winner | 90/100 |
| Dosing & Form | 25/25Winner | 25/25 |
| Purity | 20/25 | 23/25Winner |
| Value | 23/25Winner | 19/25 |
| Transparency | 23/25Winner | 23/25 |
| Cost/Day | $0.33Winner | $0.87 |
| Dose/Serving | 5000mg | 5000mg |
| Form | Micronized Creatine Monohydrate (Creapure) | Micronized Creatine Monohydrate (Creapure) |
| Third-Party Tested | ✓ Yes | ✓ Yes |
| Proprietary Blend | No | No |
Why This Comparison Matters
Optimum Nutrition and Thorne both sell creatine monohydrate - the most studied sports supplement in existence. The active ingredient is identical. Creatine is creatine. So why does Thorne cost more, and is the premium justified?
The answer comes down to third-party testing, NSF Certified for Sport status, and brand trust. Thorne's creatine is NSF Certified for Sport, meaning it is tested for banned substances - critical for competitive athletes subject to drug testing. Optimum Nutrition's Informed Choice certification provides similar assurance but through a different testing body.
Both score well in our system. The question is which testing certification and price point fits your needs.
Detailed Score Breakdown
Micronized Creatine Monohydrate Powder
Optimum Nutrition
Standard creatine monohydrate - supported by the full 500+ study evidence base
Informed Choice certified, Creapure source, GMP facility
$0.33/day at 5g dose - excellent value for a Creapure product with third-party certification
Single ingredient, no fillers, Creapure source clearly labeled on packaging
One of the best-selling creatine supplements globally, Creapure sourced with third-party testing
Creatine (Creapure)
Thorne
Standard creatine monohydrate with the full evidence base behind it
NSF Certified for Sport, uses Creapure (German-manufactured, highest purity grade available)
$0.87/day at 5g dose - premium pricing justified by NSF certification and Creapure
Single ingredient, full disclosure, NSF certification displayed prominently
Creapure is manufactured in Germany by AlzChem and is considered the purest creatine source available
How We Compared These Products
Every product in our database is scored on four equally-weighted pillars: dosing accuracy and form quality, purity verification (third-party testing), cost per clinically effective dose (not cost per pill), and label transparency. Each pillar is worth 25 points for a total of 100.
Cost per effective dose is calculated using the clinically studied dose from published research, not the manufacturer's suggested serving. If a product requires multiple servings to reach the dose used in clinical trials, that cost is reflected in the value score.
For a full explanation of our scoring methodology, see our methodology page. Prices were last checked on the dates listed for each product and may have changed.
Frequently Asked Questions
Is Optimum Nutrition or Thorne creatine better?
Both score A overall, a tie at the top. The active ingredient (creatine monohydrate) is identical. The differentiator is third-party testing certification: Thorne carries NSF Certified for Sport and Optimum Nutrition carries Informed Choice. Both verify the product is free from banned substances. Optimum Nutrition wins on cost per 5g dose. For recreational athletes, ON is the better value.
Does NSF Certified for Sport matter for creatine?
Only if you are a competitive athlete subject to drug testing. NSF Certified for Sport tests every lot for 270+ banned substances on WADA, NFL, MLB, and NCAA prohibited lists. For recreational gym-goers, Informed Choice certification (which ON carries) provides equivalent banned-substance assurance. For tested athletes, NSF Certified for Sport is the more widely accepted certification.
Is creatine monohydrate all the same regardless of brand?
At the molecular level, yes, creatine monohydrate is a single well-defined compound. What differs between brands is purity verification, manufacturing quality control, and absence of contaminants. That is exactly what third-party testing certifications measure. Within tested, reputable brands, the creatine itself performs identically.
How much creatine should I take per day?
5g per day is the research-supported maintenance dose for strength, power, and muscle mass benefits. Some athletes start with a 5-7 day loading phase of 20g per day split into 4 doses, though this is optional and only accelerates time to saturation by a few weeks. Both Optimum Nutrition and Thorne deliver 5g per scoop.
Do I need 'micronized' creatine or is regular fine?
Micronization makes creatine powder smaller, which improves mixability in water but does not affect absorption or effectiveness. It is a convenience feature, not a performance upgrade. Both Optimum Nutrition and Thorne use micronized creatine. For practical use, mixing ease is the only real difference.
More Creatine Monohydrate Comparisons
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FDA Disclaimer: These statements have not been evaluated by the Food and Drug Administration. The products discussed on this page are not intended to diagnose, treat, cure, or prevent any disease. Always consult with a qualified healthcare professional before starting any supplement regimen.