Best Creatine (2026): 6 Powders Compared on Purity, Testing and Price
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The best creatine for most people is Optimum Nutrition Micronized Creatine Monohydrate: 5 g of plain creatine monohydrate per scoop, listed as certified in the Informed Choice register, for about 23¢ a day. Thorne is the best-verified (NSF Certified for Sport) at about twice the price, and Momentous is the pick if you want Creapure, the German-made ingredient.
Creatine is the rare supplement where the science is settled and the product question is simple. The form with nearly all the evidence is plain creatine monohydrate, the dose is 3–5 g a day, and newer forms such as HCl or “buffered” creatine have not been shown to work better. So the differences between products come down to three things: is it really monohydrate and nothing else, can anyone outside the company confirm what is in the tub, and what does 5 g cost.
I compared six popular creatine powders sold on Amazon on exactly those points, and I explain below why I did not include any creatine gummies.
The ranking
1. Optimum Nutrition Micronized Creatine — 8.5/10. The default. Pure monohydrate, Informed Choice certification confirmed in the register, about 23¢ per 5 g.
2. Thorne Creatine — 8.5/10. The best-verified: NSF Certified for Sport, which I confirmed in NSF’s register. About 49¢ per 5 g.
3. Momentous Creatine — 8/10. Creapure plus NSF Certified for Sport. About 48¢ per 5 g.
4. Klean Athlete Klean Creatine — 7.5/10. NSF Certified for Sport, but the most expensive per serving here, about 58¢.
5. Nutricost Creatine Monohydrate — 7/10. The cheapest, about 22¢ per 5 g, with no product certification you can check.
6. ONNIT Creatine Monohydrate — 6/10. Fine creatine, but only a non-GMO verification, a small tub and about 50¢ per 5 g.
How this comparison was done
I have not taken these products, and there is no test panel or lab analysis. I read each product’s Supplement Facts and directions on Amazon and checked every testing claim against the public register of the certifying body (NSF for Thorne, Momentous and Klean Athlete; Informed Choice for Optimum Nutrition). Prices are the one-time Amazon prices I saw on 5 October 2026; they change often, and larger tubs usually cost less per serving. The scores follow my methodology: ingredient form and dose against the research, what else is in the product, how much of the quality claim can be checked, and cost. This is general information, not medical advice.
What to look for on a creatine label
- Creatine monohydrate, and nothing else. The International Society of Sports Nutrition calls monohydrate the most effective form for building strength and lean mass. Creatine HCl, ethyl ester and buffered creatine (Kre-Alkalyn) cost more and have not beaten it in head-to-head trials; a 2012 study of buffered creatine found no advantage.
- “Micronized” is about mixing, not results. Smaller particles dissolve more easily in water. It is the same molecule.
- 5 g per scoop. 3–5 g a day is enough once your muscles are full. A loading phase of 20 g a day for 5–7 days only gets you there faster; see creatine before or after a workout for timing.
- Testing you can check. NSF Certified for Sport and Informed Choice/Informed Sport screen for banned substances and check the label. A certification only counts if the product is in the certifier’s own register. “Made in a GMP facility” refers to the factory, not to the product.
- Creapure. A creatine monohydrate made in Germany by AlzChem, sold on purity. It is a quality signal, not a performance one.
Why there are no creatine gummies in this list
Gummies are popular, but they are where label failures cluster. In 2025 the supplement app SuppCo paid an independent lab to test popular creatine products: four of six gummies sold on Amazon contained almost no creatine, two contained none, and none of the powders had that problem, as reported by Wired. NOW Foods, which tested twelve gummy brands in 2024, reported that about half fell short of their label, with some of the creatine apparently degraded into creatinine. Creatine is not very stable in a moist gummy, and a full 5 g dose usually takes several gummies. A few gummies are now NSF Certified for Sport, which is the minimum to look for, but a powder remains cheaper and more reliable. The certified options are compared in the best creatine gummies.
The comparison table
| Product | Per scoop | Ingredient | Verified testing | Price seen | Cost per 5 g |
|---|---|---|---|---|---|
| Optimum Nutrition | 5 g | Micronized monohydrate | Informed Choice (register) | $27.99 / 120 | $0.23 |
| Thorne | 5 g | Micronized monohydrate | NSF Certified for Sport (register) | $44.00 / 90 | $0.49 |
| Momentous | 5 g | Creapure monohydrate | NSF Certified for Sport (register) | $42.99 / 90 | $0.48 |
| Klean Athlete | 5 g | Monohydrate | NSF Certified for Sport (register) | $34.50 / 60 | $0.58 |
| Nutricost | 5 g | Micronized monohydrate | No | $21.50 / 100 | $0.22 |
| ONNIT | 5 g | Monohydrate | IGEN non-GMO only | $14.99 / 30 | $0.50 |
The six products, one by one
1. Optimum Nutrition Micronized Creatine: the best overall
One scoop gives 5 g of micronized creatine monohydrate, and the only ingredient is creatine monohydrate. At $27.99 for 120 servings, that is about 23¢ a day, essentially the cheapest price here. What puts it first is that its testing claim checks out: Optimum Nutrition’s Micronized Creatine Powder appears in the Informed Choice register, a program that buys products from retail and screens them for banned substances. Amazon shows more than 82,000 ratings, averaging 4.6.
Check current prices and sizes on Amazon2. Thorne Creatine: the best-verified
5 g of micronized creatine monohydrate per scoop, nothing added. Thorne Creatine is listed in NSF’s Certified for Sport register, the program used by many US professional leagues, with dozens of individual lot numbers. If you are a drug-tested athlete, or if independent checks matter most to you, this is the one. The cost is about 49¢ per 5 g at $44 for 90 servings, roughly twice Optimum Nutrition.
Check current prices and sizes on Amazon3. Momentous Creatine: the Creapure pick
Momentous uses Creapure, the German-made monohydrate, at 5 g per scoop, and its creatine is listed in NSF’s Certified for Sport register. That is the most complete quality story on this list: a known ingredient source and a verified product. It costs about the same as Thorne, 48¢ per 5 g at $42.99 for 90 servings. Whether Creapure is worth paying for is a matter of preference; no study shows it builds more muscle than other pure monohydrate.
Check current prices and sizes on Amazon4. Klean Athlete Klean Creatine: verified, but pricier
Klean Creatine is plain creatine monohydrate at 5 g and appears in NSF’s Certified for Sport register under Nestlé Health Science, which owns the brand. The weakness is value: the 11.1 oz tub holds about 60 servings for $34.50, about 58¢ per 5 g, the highest here. A good choice when it is on sale.
Check current prices and sizes on Amazon5. Nutricost Creatine Monohydrate: the cheapest
5 g of micronized monohydrate per serving, 100 servings for $21.50, about 22¢ per 5 g, and Amazon’s best seller in its category. The label lists only creatine monohydrate. What it does not have is a product certification you can look up, so you are trusting the label. Creatine powders have a good record in independent tests, so this is a reasonable budget choice for anyone who is not drug-tested.
Check current prices and sizes on Amazon6. ONNIT Creatine Monohydrate: fine, but no reason to pay more
5 g of creatine monohydrate per scoop with nothing added. The “IGEN Non-GMO Tested” mark on the listing is a non-GMO verification, not a banned-substance or label check. At $14.99 for 30 servings it costs about 50¢ per 5 g, the price of Thorne without its NSF certification.
Check current prices and sizes on Amazon
Which one should you buy?
- Most people: Optimum Nutrition. Pure monohydrate, a verifiable certification, the lowest price among certified products.
- Drug-tested athletes: Thorne or Momentous (NSF Certified for Sport). Check with your league which programs it accepts.
- You want Creapure: Momentous.
- Women, including over 40: the same products work; see the best creatine for women for what the research in women shows.
- Lowest cost, not drug-tested: Nutricost.
Whichever you choose, expect 1–2 kg of extra water weight in the first weeks; that is water in the muscle, not fat (does creatine make you gain weight?). The hair-loss worry comes from a single 2009 study that measured DHT, not hair; see does creatine cause hair loss? Creatine is not advised for people with kidney disease without medical advice.
Limits of this comparison
I did not have these products tested by a laboratory, so the scores rely on labels and on the certifiers’ registers. A certification covers the lots the certifier tested; it is not a guarantee for every tub. Prices on Amazon change daily.
As an Amazon Associate I earn from qualifying purchases. This never changes a score, a ranking or a verdict — those are decided before any commercial link is considered.
For every reported side effect and what the trials show, see creatine side effects: what is real and what is a myth.
Wondering when you will see results? How long creatine takes to work gives the week-by-week timeline.
Deciding between creatine and BCAAs? See creatine vs BCAA for which one the research supports.
Common questions
What is the best creatine?
Plain creatine monohydrate from a brand whose product is in an independent register. On that basis and on price, Optimum Nutrition Micronized Creatine: 5 g per scoop, Informed Choice certified, about 23¢ a day.
What is the best form of creatine?
Creatine monohydrate. It has by far the most research, and HCl, ethyl ester and buffered forms have not shown better results in head-to-head trials.
Is Creapure better?
Creapure is a high-purity monohydrate made in Germany. It is a sign of a careful supplier, but no study shows it builds more strength or muscle than other pure monohydrate.
Are creatine gummies worth it?
Only with care. Independent tests in 2024 and 2025 found several popular gummies with little or no creatine, while the powders tested did not have that problem. If you prefer a gummy, choose one listed in NSF’s Certified for Sport register.
Which creatine is NSF certified?
Of the six here, Thorne, Momentous and Klean Athlete appear in NSF’s Certified for Sport register. Optimum Nutrition is certified by a different program, Informed Choice.
Sources
- Product labels and listings on Amazon.com (Optimum Nutrition, Thorne, Momentous, Klean Athlete, Nutricost, ONNIT), read on 5 October 2026.
- NSF International — certified creatine products — Thorne, Momentous and Klean Creatine listings.
- Informed Choice — supplement search — Optimum Nutrition Micronized Creatine Powder.
- Kreider RB et al. International Society of Sports Nutrition position stand: safety and efficacy of creatine supplementation. J Int Soc Sports Nutr. 2017.
- Jagim AR et al. A buffered form of creatine does not promote greater changes in muscle creatine content, body composition, or training adaptations than creatine monohydrate. J Int Soc Sports Nutr. 2012.
- Wired — Those creatine gummies you bought online might not contain creatine — the SuppCo and NOW Foods gummy tests.
Roy Douele founded inareview and writes every review on the site. He is not a medical professional. Each review is built from the product's label, the brand's own testing documents, public certification registers and the published clinical research, then scored out of 10. Brands cannot pay for a review or influence a score.
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