Creatine is the most researched supplement in sports nutrition. Over 500 peer-reviewed studies confirm its effectiveness for increasing strength, power output, and muscle mass. The problem is that with dozens of options on the market, knowing which one to buy is confusing.
We compared 8 of the most popular creatine products against each other and against the published research — checking every label for dose per serving, form, added ingredients and third-party purity certification and purity.
What to Look For
Form: Monohydrate Has the Evidence
Creatine monohydrate is the form used in most of the 900+ human creatine trials indexed on PubMed. Creatine HCl has three human trials, and the two that compared it with monohydrate — ten people per group — disagree: one found no difference, one found HCl better for sprint and jump performance. Ethyl ester did worse than monohydrate, and buffered creatine showed no advantage. Two small trials that contradict each other are not a reason to pay more: unless monohydrate upsets your stomach, buy monohydrate.
Micronized vs Standard
Micronized creatine has smaller particles that dissolve more easily and absorb faster. Opt for micronized when given the choice.
Third-Party Testing
Look for Informed Choice, NSF Sport or Labdoor certification. This verifies purity and confirms no banned substances — critical for drug-tested athletes.
Avoid Proprietary Blends
Any creatine product that hides its dose in a proprietary blend should be avoided. You need to know you're getting a full 3-5g dose per serving.
Where to buy on Amazon
Products discussed on this page. Outside the US the links open your local Amazon store where it carries the product; stock and price differ between stores. As an Amazon Associate we earn from qualifying purchases, at no extra cost to you.
Buying in the UK?
A UK retailer that ships within the UK. Price and stock change often; check them on the retailer's page. We earn a commission if you buy, at no extra cost to you.
Frequently Asked Questions
Plain micronized creatine monohydrate, nothing added. Monohydrate is the form the research used; the brand matters far less than the form and the 3–5 g daily dose.
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