Creatine: what the research says

    Evidence-basedBy the Tozemoon Science Team·Updated ·3 min read·15 peer-reviewed studies

    How much creatine should you take per day?

    3–5 g of creatine monohydrate per day is enough for almost everyone; timing barely matters. A loading phase of about 20 g per day for 5–7 days saturates muscles faster but is optional. Over months, creatine adds measurable strength and lean mass when combined with lifting, and it is safe for healthy adults.

    Creatine monohydrate is the most researched sports supplement. Meta-analyses consistently show it increases strength and lean mass gains when combined with resistance training, with a strong safety record in healthy adults.

    Creatine: the key facts in 30 seconds

    • 1Creatine monohydrate is the most studied and most effective legal supplement for strength and muscle gain.
    • 23–5 g per day, every day, is all you need. Timing barely matters — consistency does.
    • 3Expect a 1–3 lb (0.5–1.5 kg) scale jump in the first weeks: that's water stored inside the muscle, not fat.
    • 4Decades of research show no harm to the kidneys or liver in healthy people at normal doses.

    How much creatine do you need? Personal calculator

    The default for almost everyone. Muscles are fully saturated after 3–4 weeks.

    Your daily creatine dose

    3.3–4.9 g

    Any time of day, with a meal if your stomach is sensitive. Never skip days.

    • ≈ level teaspoons of powder (≈ 5 g)1.0
    • ≈ standard scoops (≈ 3 g)1.6
    • ≈ lb of raw beef needed (≈ 2 g/lb)2.4

    What happens when you start

    1. Week 1

      Water gain

      Muscles pull in water with creatine. The scale goes up 1–3 lb; muscles look fuller.

    2. Weeks 2–4

      Full saturation

      Without loading, stores are full by now. You can do one or two extra reps on hard sets.

    3. Months 1–3

      Measurable gains

      Extra reps add up to more training volume and greater strength and lean mass versus placebo.

    4. If you stop

      Slow return

      Stores drift back to normal over 4–6 weeks. You don't lose the strength you built.

    What does creatine actually improve for lifters?

    OutcomeEffectEvidence
    Max strengthModerate boost (≈ +5–10% extra vs. training alone)Strong
    Lean mass≈ +1–2 kg extra over several weeksStrong
    Reps & repeated sprintsClear boostStrong
    Older adultsHelps preserve muscle and strengthModerate
    Brain & cognitionPossible benefit when sleep-deprivedLimited
    Endurance (long efforts)Little to noneModerate

    Which form should you buy?

    Monohydrate powder

    Kicks in: 3–4 weeks

    + Used in nearly all studies, cheapest, works.

    − Can be gritty; mix in a warm drink or shake.

    Micronized monohydrate

    Kicks in: 3–4 weeks

    + Same molecule, dissolves better.

    − Slightly more expensive, no extra effect.

    Creatine HCl / ethyl ester / 'buffered'

    Kicks in: Unclear

    + Marketed as needing smaller doses.

    − No evidence they beat monohydrate; often much pricier.

    Gummies

    Kicks in: 3–4 weeks

    + Convenient.

    − Independent tests found some products with little or no creatine. Buy third-party tested only.

    Creatine myths: what the evidence actually says

    “Creatine causes hair loss.”

    Mostly false

    This comes from a single small 2009 study on a hormone marker (DHT), never replicated and with no hair measured. Current evidence does not show hair loss.

    “Creatine damages your kidneys.”

    False

    In healthy people, studies up to several years show no kidney harm at normal doses. It can raise creatinine on a blood test, which is not the same as kidney damage.

    “You need to cycle creatine on and off.”

    False

    Your body does not stop making or using creatine in a way that requires breaks. Daily use is the standard protocol in research.

    “Creatine only adds water weight.”

    Partly true

    Early weight gain is mostly water inside the muscle. Over weeks of training, creatine users also gain more strength and lean mass than placebo groups.

    Ready-to-use creatine protocols

    Simple daily (no loading)

    For: Anyone not in a hurry

    1. 1Take 3–5 g of creatine monohydrate every day, any time.
    2. 2Mix with water, shake or a meal.
    3. 3Muscles are fully saturated after about 3–4 weeks.

    Fast loading

    For: Lifters wanting results within a week

    1. 1Take 0.3 g/kg/day (≈20 g) split into 4 doses for 5–7 days.
    2. 2Then drop to 3–5 g/day.
    3. 3Expect 1–2 lb of water weight in the first week.

    What do the key studies on creatine show?

    Position stand

    ISSN position stand: safety and efficacy of creatine supplementation ↗

    Kreider et al., J Int Soc Sports Nutr, 2017

    What they did
    Expert review of hundreds of studies on performance, health and safety.
    What they found
    Creatine monohydrate is the most effective supplement for increasing high-intensity exercise capacity and lean mass; no evidence of harm in healthy people.

    For your training: Monohydrate, 3–5 g a day. That's the whole protocol.

    Review

    Common questions and misconceptions about creatine supplementation ↗

    Antonio et al., J Int Soc Sports Nutr, 2021

    What they did
    Researchers addressed 11 common beliefs (hair loss, kidneys, water, women, teens) using the available evidence.
    What they found
    Most fears are unsupported: no consistent link to hair loss, dehydration, cramps or kidney damage.

    For your training: Most scary creatine myths come from one small study or from anecdotes.

    Meta-analysis

    Effect of creatine supplementation on body composition and performance ↗

    Branch, Int J Sport Nutr Exerc Metab, 2003

    What they did
    Pooled 100 studies comparing creatine to placebo.
    What they found
    Creatine improved lean mass and short, high-intensity performance; little effect on long endurance.

    For your training: Ideal for lifting and sprints — skip it if you only run long distances.

    Side effects and safety

    • Water weight gain of 1–3 lb — matters for lifters who need to make a weight class.
    • Stomach upset with large single doses (10 g+). Split doses or take with food.
    • Creatine raises a blood marker (creatinine) used to check kidneys. Tell your doctor you take it so results aren't misread.
    • If you have kidney disease, talk to a doctor first.

    Creatine: frequently asked questions

    Do I need a loading phase?+

    No. Loading (about 20 g/day for a week) just fills your muscles faster. 3–5 g/day reaches the same level in 3–4 weeks.

    When is the best time to take creatine?+

    It barely matters. Some studies hint at a small edge for post-workout, but taking it every day is what counts.

    Does creatine cause hair loss?+

    One 2009 study found a rise in a hormone linked to hair loss, but it didn't measure hair and hasn't been replicated. No evidence shows creatine causes baldness.

    Should I cycle creatine?+

    No. There's no benefit to taking breaks, and stores drop if you do.

    Is creatine safe for women and teenagers?+

    Research in women shows similar benefits and safety. For teenagers data is more limited; good training and nutrition should come first.

    Will creatine make me look bloated?+

    The water is stored inside the muscle, not under the skin. Most people simply look fuller.

    All sources (15 most cited studies)

    Ranked by citations. Metadata from OpenAlex (CC0).

    1. Inter-Society Consensus for the Management of Peripheral Arterial Disease (TASC II) ↗

      Lars Norgren, William R. Hiatt, John Dormandy et al. · Journal of Vascular Surgery · 2007 · 8,221 citations · Study · Open access

    2. 2021 ESC Guidelines on cardiovascular disease prevention in clinical practice ↗

      Frank L.J. Visseren, François Mach, Yvo M. Smulders et al. · European Heart Journal · 2021 · 6,509 citations · Study · Open access

    3. 2023 ESC Guidelines for the management of acute coronary syndromes ↗

      Robert A. Byrne, Xavier Rosselló, John Joseph Coughlan et al. · European Heart Journal · 2023 · 5,176 citations · Study · Open access

    4. ESC/EAS Guidelines for the management of dyslipidaemias ↗

      Željko Reiner, Alberico Luigi Catapano, Guy De Backer et al. · European Heart Journal · 2011 · 3,538 citations · Study · Open access

    5. Curcumin: A Review of Its Effects on Human Health ↗

      Susan Joyce Hewlings, Douglas Kalman · Foods · 2017 · 2,684 citations · Review · Open access

    6. Expert Panel on Integrated Guidelines for Cardiovascular Health and Risk Reduction in Children and Adolescents: Summary Report ↗

      EXPERT PANEL ON INTEGRATED GUIDELINES FOR CARDIOVASCULAR HEALTH AND RISK REDUCTION IN CHILDREN AND ADOLESCENTS · PEDIATRICS · 2011 · 2,591 citations · Study · Open access

    7. Evidence-Based Recommendations for Optimal Dietary Protein Intake in Older People: A Position Paper From the PROT-AGE Study Group ↗

      Jürgen M. Bauer, Gianni Biolo, Tommy Cederholm et al. · Journal of the American Medical Directors Association · 2013 · 2,534 citations · Study · Open access

    8. Nonalcoholic Steatohepatitis: Summary of An Aasld Single Topic Conference ↗

      Brent A. Neuschwander‐Tetri, Stephen Hugh Caldwell · Hepatology · 2003 · 2,157 citations · Study · Open access

    9. Quercetin, Inflammation and Immunity ↗

      Yao Li, Jiaying Yao, Chunyan Han et al. · Nutrients · 2016 · 1,988 citations · Study · Open access

    10. Simvastatin and Niacin, Antioxidant Vitamins, or the Combination for the Prevention of Coronary Disease ↗

      Bryan Brown, Xue-Qiao Zhao, Alan Chait et al. · New England Journal of Medicine · 2001 · 1,985 citations · Study · Open access

    11. ACC/AHA 2007 Guidelines for the Management of Patients With Unstable Angina/Non–ST-Elevation Myocardial Infarction ↗

      Jeffrey L. Anderson, Cynthia D. Adams, Elliott Marshall Antman et al. · Circulation · 2007 · 1,856 citations · Study · Open access

    12. Monitoring Training Load to Understand Fatigue in Athletes ↗

      Shona Leigh Halson · Sports Medicine · 2014 · 1,839 citations · Study · Open access

    13. Oxidative Stress, Synaptic Dysfunction, and Alzheimer’s Disease ↗

      Eric Tönnies, Eugenia V. Trushina · Journal of Alzheimer s Disease · 2017 · 1,749 citations · Study · Open access

    14. Oxidative Stress, Prooxidants, and Antioxidants: The Interplay ↗

      Anu Rahal, Amit Kumar, Vivek Singh et al. · BioMed Research International · 2014 · 1,713 citations · Study · Open access

    15. 2016 ESC/EAS Guidelines for the Management of Dyslipidaemias ↗

      Alberico Luigi Catapano, Ian M Graham, Guy De Backer et al. · Atherosclerosis · 2016 · 1,585 citations · Study · Open access

    Keep reading

    Protein intake →

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    Training volume →

    How many sets per week should you do per muscle?

    Caffeine →

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    Other topics

    CaffeineDeloads and periodizationProgressive overloadProtein intakeRest between setsSleep and recoveryTraining frequencyTraining volumeWarm-up

    How we write these guides: we rank studies by citations using OpenAlex, prioritise meta-analyses and position stands, and summarise them in our own words with links to every source. Educational summary, not medical advice. Consult a professional before changing your diet or supplementation.

    This page uses data from the OpenPowerlifting project. You may download a copy of the data at data.openpowerlifting.org. Raw, full-power (squat-bench-deadlift) competition results only.

    Tozemoon is independent and not affiliated with any federation or athlete.