Does Creatine Work? What the Research Says

By DanielUpdated 17 Oct 2026

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30 years in strength training & bodybuilding4 min read

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This review follows the creatine-monohydrate evidence by outcome: what was studied, the results reported and the limits of those findings. It also covers the protocols used in the cited research and shows the authorised EU wording separately.

The authorised claim, verbatim

Creatine has one EU-authorised claim. The exact EU-authorised wording, including its condition of use, is shown in the box on this page — we don’t add to it or soften it.

What the studies say, outcome by outcome

Repeated short, high-intensity efforts

The International Society of Sports Nutrition’s position stand on creatine, a peer-reviewed consensus document covering decades of trials, reviews the controlled-trial research on creatine monohydrate and repeated high-intensity exercise (Kreider et al., 2017); a follow-up critical review in 2022 covers bioavailability, safety and regulatory status (Kreider, Jäger & Purpura, 2022). The only effect we state is the authorised EU claim quoted above.

Monohydrate vs other creatine forms

A dedicated review of “novel” creatine forms — creatine ethyl ester, buffered creatine, creatine HCL and others — concluded that there is little to no evidence that any of the newer forms of creatine are more effective and/or safer than creatine monohydrate, whether ingested alone or in combination with other nutrients (Jäger, Purpura, Shao, Inoue & Kreider, 2011). The ISSN position stand notes that the vast majority of studies assessing the efficacy of creatine supplementation on muscle phosphagen levels, whole body creatine retention and/or performance have evaluated creatine monohydrate (Kreider et al., 2017).

Safety in healthy adults

The 2017 ISSN position stand describes creatine monohydrate as well tolerated and safe to consume in healthy untrained and trained individuals regardless of age, and says there is no compelling scientific evidence that short- or long-term use (up to 30 g/day for 5 years) has detrimental effects on otherwise healthy individuals or among clinical populations who may benefit from creatine supplementation. It also reports that, while some have suggested that people with pre-existing renal disease consult a physician before supplementing in an abundance of caution, researchers have concluded that there is no compelling evidence that creatine supplementation negatively affects renal function in healthy or clinical populations. Anyone with an existing kidney condition, or on medication that affects the kidneys, should talk to a healthcare professional before supplementing, and mention that they’re taking creatine.

Practical dosing, as reported by the cited research

The dosing below is what the position-stand literature describes, not an EU-approved instruction — the only EU-authorised figure is the one in the claim’s condition of use, shown in the box on this page.

Maintenance dose: the ISSN position stand describes 3–5 g/day as sufficient to maintain elevated muscle creatine stores once they’re saturated.
Optional loading phase: the position-stand literature describes a loading protocol of roughly 0.3 g per kg of bodyweight per day (around 20 g/day for a 70 kg adult, typically split into 4 doses) for 5–7 days, which that literature describes as reaching saturation sooner than a flat daily dose. The position stand also describes taking 3 g/day for 28 days as an alternative protocol, with a more gradual rise in muscle creatine content.
Timing: total daily intake, taken consistently, is the variable the evidence ties to the outcome — the research doesn’t establish a specific time of day as superior.

What the evidence does not support

“Creatine causes hair loss.” The study usually cited for this is a small 2009 study that measured a rise in a hormone marker (DHT); it did not measure hair loss itself. The ISSN position stand does not list hair loss among creatine’s effects.
“Creatine is a steroid.” It isn’t. Creatine is a compound the body makes from amino acids and also obtains from food (red meat, fish); anabolic steroids are synthetic hormones with an entirely different mechanism.
“Advanced” forms beat monohydrate. The 2011 review of novel forms (Jäger et al.) reports that there is little to no evidence that any of the newer forms of creatine are more effective and/or safer than creatine monohydrate, whether ingested alone or in combination with other nutrients.
Any benefit beyond the authorised wording. The EU claim is specifically about performance in successive short, high-intensity bursts. We don’t extend it to broader “muscle building” or body-composition claims the position-stand evidence doesn’t make on its own.

Sources

Kreider RB, Kalman DS, Antonio J, et al. (2017). “International Society of Sports Nutrition position stand: safety and efficacy of creatine supplementation in exercise, sport, and medicine.” Journal of the International Society of Sports Nutrition, 14:18. DOI: 10.1186/s12970-017-0173-z · PMID: 28615996 · PMCID: PMC5469049
Jäger R, Purpura M, Shao A, Inoue T, Kreider RB (2011). “Analysis of the efficacy, safety, and regulatory status of novel forms of creatine.” Amino Acids, 40(5):1369-83. DOI: 10.1007/s00726-011-0874-6 · PMID: 21424716 · PMCID: PMC3080578
Kreider RB, Jäger R, Purpura M (2022). “Bioavailability, Efficacy, Safety, and Regulatory Status of Creatine and Related Compounds: A Critical Review.” Nutrients, 14(5):1035. DOI: 10.3390/nu14051035 · PMID: 35268011 · PMCID: PMC8912867
EU Register of authorised nutrition and health claims made on foods (creatine claim wording & conditions of use): ec.europa.eu — EU Register of health claims

This page is part of the CapyFuel Evidence Library — see how we summarise the research and pick sources. For the full practical guide to using creatine, visit our creatine monohydrate hub. Ready to compare prices? See live creatine pricing in Malta and Cyprus.

Frequently asked questions

Does creatine actually work?

The exact EU-authorised wording is shown in the box on this page. The International Society of Sports Nutrition's position stand reviews the controlled trials on creatine (Kreider et al., 2017).

How much creatine should I take, according to the research?

The position-stand literature describes a steady 3–5 g/day as enough to maintain saturated muscle creatine stores. An optional loading phase (around 20 g/day split into 4 doses for 5–7 days) is described in that literature as reaching saturation sooner; the position stand also describes 3 g/day for 28 days as an alternative protocol, with a more gradual rise in muscle creatine content.

Is creatine monohydrate better than other forms like HCL or buffered creatine?

A 2011 review of novel creatine forms (Jäger et al.) reports that there is little to no evidence that any of the newer forms of creatine are more effective and/or safer than creatine monohydrate, whether ingested alone or in combination with other nutrients. The ISSN position stand (Kreider et al., 2017) notes that the vast majority of studies assessing the efficacy of creatine supplementation on muscle phosphagen levels, whole body creatine retention and/or performance have evaluated creatine monohydrate.

Does the research support creatine causing hair loss or kidney damage in healthy people?

The ISSN position stand (Kreider et al., 2017) reports that studies in healthy and diseased populations, at 0.3 to 0.8 g/kg/day for up to 5 years, have consistently shown that creatine supplementation poses no adverse health risks. On renal function it notes that some have suggested people with pre-existing renal disease consult their physician before supplementing, as a precaution. The position stand does not discuss hair loss.

Creatine monohydrate: a review of the research