Creatine Science — evidence summaries on creatine

Best Creatine Supplements: A Research-Informed Comparison

Creatine monohydrate is the form most studied in healthy people for high-intensity exercise performance, typically at about 3–5 g per day. The products below all deliver creatine monohydrate; we compare them on the form used, the labeled serving, label transparency, and whether testing is independently certified. We do not display live prices or ratings, value is not part of the score, and Amazon sales popularity is only an eligibility signal — it does not set the editorial ranking.

How we selected these products

We started from creatine monohydrate powders appearing among the leading Amazon listings observed on June 19, 2026, removed near-identical size variations of the same product, and kept one entry per distinct product line. We then scored each on our published methodology (form, labeled dose, transparency, third-party testing, additives, and convenience). We do not score value, because we do not publish a verified current price.

See our full product-evaluation methodology and scoring weights

At a glance

#ProductFormLabeled servingTestingScore
1Thorne — Thorne Creatine (Creapure Creatine Monohydrate) (Best Overall)Micronized creatine monohydrate (Creapure)5 g creatine monohydrate per servingIndependently certified9.4
2Optimum Nutrition — Optimum Nutrition Micronized Creatine Monohydrate PowderMicronized creatine monohydrate (Creapure)5 g creatine monohydrate per servingIndependently certified9.4
3Momentous — Momentous Creatine Monohydrate PowderCreatine monohydrate powder5 g creatine monohydrate per servingIndependently certified9.4
4Nutricost — Nutricost Creatine Monohydrate Micronized PowderMicronized creatine monohydrate5 g creatine monohydrate per servingBrand states third-party tested8.9
5Naked Nutrition — Naked Creatine Monohydrate Powder (500 g)Creatine monohydrate powder5 g creatine monohydrate per servingTesting not independently verified8.4
6BulkSupplements — BulkSupplements Creatine Monohydrate Powder (1 kg)Micronized creatine monohydrate5 g creatine monohydrate per servingTesting not independently verified8.3

The products

#1Best Overall

Thorne Creatine (Creapure Creatine Monohydrate)

Thorne

Form
Micronized creatine monohydrate (Creapure)
Labeled serving
5 g creatine monohydrate per serving
Count / size
90 servings
Testing
Independently certified — NSF Certified for Sport
Editorial score
9.4 / 10

Delivers creatine monohydrate, the form studied in healthy people for high-intensity exercise performance, at the commonly studied ~5 g serving. Benefits are specific to short, high-intensity efforts and individual responses vary.

Strengths

  • Uses Creapure creatine monohydrate, a high-purity grade of the most-studied form
  • 5 g per serving matches commonly studied doses
  • NSF Certified for Sport — independently tested for banned substances and label accuracy
  • Single-ingredient, unflavored powder with no proprietary blend

Limitations

  • Unflavored only; some people prefer a flavored creatine
  • Sold only as a plain single-ingredient powder

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#2

Optimum Nutrition Micronized Creatine Monohydrate Powder

Optimum Nutrition

Form
Micronized creatine monohydrate (Creapure)
Labeled serving
5 g creatine monohydrate per serving
Count / size
120 servings (600 g)
Testing
Independently certified — Informed Choice
Editorial score
9.4 / 10

Delivers creatine monohydrate at the commonly studied ~5 g serving. The evidence applies to high-intensity, short-duration exercise in healthy people, not to exercise in general.

Strengths

  • Creapure-grade micronized monohydrate for good mixability
  • Informed Choice certified for banned-substance testing
  • 5 g per serving consistent with the research
  • Widely available and easy to find

Limitations

  • Unflavored only
  • Plain single-ingredient powder with no flavored option

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#3

Momentous Creatine Monohydrate Powder

Momentous

Form
Creatine monohydrate powder
Labeled serving
5 g creatine monohydrate per serving
Count / size
90 servings
Testing
Independently certified — NSF Certified for Sport
Editorial score
9.4 / 10

Delivers creatine monohydrate at the commonly studied ~5 g serving. The studied benefits are specific to short, high-intensity exercise and individual responses vary.

Strengths

  • NSF Certified for Sport — independent banned-substance and label verification
  • 5 g per serving matches commonly studied doses
  • Single-ingredient, unflavored powder

Limitations

  • Unflavored only
  • Sold only as a plain single-ingredient powder

View on Amazon

#4

Nutricost Creatine Monohydrate Micronized Powder

Nutricost

Form
Micronized creatine monohydrate
Labeled serving
5 g creatine monohydrate per serving
Count / size
100 servings (500 g)
Testing
Brand states third-party tested
Editorial score
8.9 / 10

Delivers creatine monohydrate at the commonly studied ~5 g serving. Evidence applies to high-intensity, short-duration efforts in healthy people.

Strengths

  • Micronized creatine monohydrate powder
  • 5 g per serving consistent with the research
  • Brand states each batch is third-party tested
  • Single-ingredient, unflavored powder

Limitations

  • Third-party testing is a brand statement, not an independent certification we could verify
  • Unflavored only

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#5

Naked Creatine Monohydrate Powder (500 g)

Naked Nutrition

Form
Creatine monohydrate powder
Labeled serving
5 g creatine monohydrate per serving
Count / size
100 servings (500 g)
Testing
Testing not independently verified
Editorial score
8.4 / 10

Delivers creatine monohydrate at the commonly studied ~5 g serving. Evidence applies to high-intensity, short-duration exercise in healthy people.

Strengths

  • Single-ingredient, unflavored monohydrate with a minimalist label
  • 5 g per serving consistent with the research

Limitations

  • We could not independently verify a third-party certification for this listing
  • Unflavored only

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#6

BulkSupplements Creatine Monohydrate Powder (1 kg)

BulkSupplements

Form
Micronized creatine monohydrate
Labeled serving
5 g creatine monohydrate per serving
Count / size
1 kg (about 200 servings)
Testing
Testing not independently verified
Editorial score
8.3 / 10

Delivers creatine monohydrate at the commonly studied ~5 g serving. The studied benefits are specific to high-intensity, short-duration exercise.

Strengths

  • Single-ingredient, unflavored monohydrate powder
  • 5 g per serving consistent with the research
  • Sold as a large bulk bag

Limitations

  • We could not independently verify a third-party certification for this listing
  • Large bag with a scoop; less convenient than pre-measured options

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