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Not FDA approvedModerate human evidence

Cellular energy-buffering compound fact sheet

Creatine

Also known as creatine monohydrate, methylguanidineacetic acid

Muscle and performanceCognition and brainHealthy agingCellular energy

Creatine helps cells buffer rapid energy demand. Evidence is strongest for strength and lean-mass support alongside resistance training; cognitive and healthy-aging claims are promising but less settled.

Quick answer

Creatine is not an FDA-approved drug for sarcopenia, cognitive decline, or aging. Human evidence supports some exercise and muscle outcomes, especially with resistance training, while cognitive effects are smaller, heterogeneous, and need better trials in clinical populations.

By the PeptideFactSheets Editorial Team. Claims are source-checked under our editorial policy; clinician review is identified only when a named reviewer is shown.

What is Creatine?

Creatine is made by the body, obtained from some foods, and stored largely in muscle as phosphocreatine to help regenerate cellular energy.

Creatine monohydrate is the best-studied supplemental form; results from it should not automatically be assigned to every creatine variant or multi-ingredient product.

Why are people interested in it?

Unlike many frontier compounds, creatine has a large randomized exercise literature and reproducible effects in some muscle settings.

Brain-energy biology has prompted trials in memory, sleep loss, depression, and aging, but the cognitive evidence is smaller and more variable.

Current regulatory status

Not FDA approved

Creatine is marketed as a dietary supplement and is not an FDA-approved drug for muscle loss, cognition, aging, or disease treatment.

What is it approved for?

No FDA-approved use. Commercial availability, supplement marketing, and clinical research do not equal an FDA-approved medicine.

What is it being studied for?

Strength and lean mass
Exercise performance
Memory and cognition
Age-related muscle and brain energy

Evidence snapshot

Moderate human evidence

Meta-analyses of randomized trials support added lean-mass and strength gains when creatine accompanies resistance training in older adults. Cognitive evidence suggests possible memory effects but has substantial heterogeneity and limited high-quality older-adult trials.

Potential benefits being researched

  • Across randomized exercise trials, creatine often adds modest lean-mass and strength gains to resistance training.
  • Cognitive meta-analyses report possible memory benefits, especially in older groups, but confidence is limited by small and heterogeneous studies.

A mechanism, biomarker, or secondary endpoint is not proof of a meaningful clinical benefit.

Known or possible risks

  • Short- and medium-term studies generally report good tolerability in studied populations, but individual medical context and product composition matter.
  • Changes in body water and creatinine-related laboratory interpretation can complicate simple assumptions about weight or kidney measures.
  • Multi-ingredient performance products add risks that cannot be attributed to creatine alone.

What we still do not know

  • Whether creatine prevents cognitive decline or dementia
  • Which older or clinical populations receive meaningful cognitive benefit
  • Very long-term outcomes across people with diverse medical conditions
  • How much benefit is independent of resistance training and adequate nutrition

Plain-English takeaway

Creatine has a sturdier human evidence base than most frontier molecules for training-related muscle outcomes. That does not make cognitive protection or healthy lifespan a settled benefit.

Research and reference links

Use these primary and authoritative sources to verify status and read beyond this summary. A study or registry entry does not by itself prove benefit.

  1. 1
    Meta-analysis of creatine and resistance training in older adults

    Randomized-trial synthesis of lean mass and upper- and lower-body strength outcomes.

  2. 2
    Randomized trial in vulnerable older women

    Controlled study separating creatine, resistance training, and combined effects.

  3. 3
    Meta-analysis of creatine and memory trials

    Synthesis reporting a possible memory effect with substantial heterogeneity.

  4. 4
    Systematic review of creatine and cognition in older adults

    Recent review emphasizing the small number and variable quality of older-adult studies.

  5. 5
    FDA: dietary supplements are not preapproved for effectiveness

    FDA explanation of the regulatory distinction between approved drugs and marketed dietary supplements.