Creatine: what lab tests and registries show
Take plain creatine monohydrate powder, 5 g a day. It costs the least per real dose, and it’s the form the studies used. Our pick is BulkSupplements.
Which creatine should I buy?
Best creatine overall
BulkSupplements Creatine Monohydrate Powder
| Lab test | 99% of label (SuppCo, June 2025) |
|---|---|
| Certification | NSF Certified for Sport |
| Cost | $0.14 per 5 g (about $4.26 a month) |
How we pick. The product needs proof that it holds its dose: a published independent lab test, or NSF Certified for Sport, which checks that the label matches what's inside. Our top pick needs both. Then we pick the lowest cost per real 5 g.
Price checked October 22, 2026. Why it’s our pick, and the best creatine for each need
| Question | Short answer |
|---|---|
| What is the best creatine monohydrate? | Also BulkSupplements. We found 30 monohydrate powders with proof of their dose. Thorne and Momentous cost more than 3 times as much. |
| What is the best creatine for women? | Plain monohydrate, the same creatine men take. None of the 11 creatines made for women that we checked has a lab test or NSF check. |
Compare all 329 creatine products
Filter Amazon’s creatine by cost per 5 g, form, type and testing. Open any product to see its label facts and testing record.
Is the creatine really in there?
| Question | Short answer |
|---|---|
| Do creatine gummies have the creatine they claim? | Often not. In published lab tests, 13 of 25 brands had a batch with almost no creatine. |
| Which creatine is actually third-party tested? | Of 135 creatine products on Amazon, 46 have a public record that proves the creatine amount. 54 claim testing, and we found no record of it. |
How should I take it?
| Question | Short answer |
|---|---|
| How much creatine per day should you take? | 5 g of creatine monohydrate a day, every day. Any time of day works, and you don’t need to load. |
| Powder, capsules or HCl: which should you take? | Powder. It costs less per real 5 g, and far more powders prove their dose. Only 1 of 44 capsule products does. |
| Creatine gummies vs powder: which should you take? | Powder, for almost everyone. It costs about 6 to 7 times less per real dose, and it has no sugar. |
What does creatine do?
| Question | Short answer |
|---|---|
| What does creatine do in your body? | It fills your muscles’ quick-energy store by about 20%. With weight training, that gives a small extra gain in strength and lean mass. |
| What are the benefits of creatine? | Muscle evidence is strong. Memory looks promising. Overall thinking and bone are mixed. |