Creatine
Performance compound | Strength • Muscle • Healthy Aging
Common names: creatine monohydrate · strength · muscle · performance
- Evidence searched through
- August 2026
- Last reviewed
- August 22, 2026
- Current version
- 1.0
Start Here
Why are people interested in creatine?
Because creatine has one of the strongest research records of any performance supplement, especially for strength, training, and muscle.
Interest has expanded into healthy aging and brain health too, although those areas are not equally settled. Creatine’s strongest evidence remains in strength, high-intensity performance, and resistance-training adaptation.
Identity
What exactly is creatine?
Creatine is a compound your body already makes and stores mostly in muscle, where it helps provide rapid energy during hard efforts.
It also comes from food and supplements. Creatine monohydrate is the form with the deepest human research record.
Strength & Performance
Does creatine actually make you stronger?
Yes. Adding creatine to resistance training produces somewhat greater strength gains on average than resistance training alone.
This is one of the most established areas of creatine research. Creatine helps support training adaptation; it does not replace the training itself.
Muscle Context
Does creatine help build muscle?
It can help increase lean mass when combined with resistance training.
Some early weight gain can come from additional water stored inside muscle. Longer-term research also supports greater training adaptation. Lean mass is not exactly the same thing as new contractile muscle, so the measurement deserves context.
Kidney Health
Is creatine bad for your kidneys?
Current human research does not show meaningful kidney-function decline from standard creatine use in generally healthy study populations.
Creatine can raise blood creatinine, which may make some common kidney estimates look worse even when more direct measures of filtration do not show the same change.
Research Question
What about brain health?
There are encouraging signals, especially around memory, but the brain research is less settled than the strength and performance evidence.
This is an area worth following without treating cognitive benefits as equally established.
4V Take
What’s the 4V take?
Creatine is one of the easier topics in the Library to summarize: it works well for what it is best known for.
The strongest evidence is around strength, high-intensity performance, and resistance-training adaptation.
Healthy-aging and cognition research make the topic more interesting, but those claims should not all be given the same confidence.
Science First. Context Always.
Plain-Language Takeaways
What should I know first?
A short set of questions to keep the underlying evidence in perspective.
- Does it work?
- Yes, particularly for strength and training-related outcomes.
- Does training still matter?
- Absolutely. Creatine adds to the training stimulus; it does not replace it.
- Is all early weight gain new muscle?
- No. Some early gain can come from water stored inside muscle.
- Is the cognition research settled?
- No. It is promising, but less mature than the performance research.
Research Pathways
Want to go deeper?
Choose a research question to see the approved 4V Take and evidence context.
4V Take
Yes. Meta-analyses of randomized trials show that creatine, especially when paired with resistance training, can add to strength gains. The clearest evidence is for high-intensity performance and training adaptation. Creatine complements the training stimulus rather than replacing it.
- Evidence bucket
- human clinical
- Research stage
- established
- Route / format
- oral creatine monohydrate + resistance training
Explore the evidence
human RCT meta-analysis
Creatine + resistance training strength gains in adults <50
human RCT meta-analysis
Creatine strength and power meta-analysis
human clinical
Safety of creatine supplementation across clinical trials
4V Take
Yes. Creatine combined with resistance training increases lean body mass more than resistance training alone on average. Some early change can reflect increased water inside muscle, but longer-term trials also support greater training adaptation. Lean body mass is not identical to pure contractile muscle, so the measurement deserves context.
- Evidence bucket
- human clinical
- Research stage
- established
- Route / format
- oral creatine + resistance training
Explore the evidence
human RCT meta-analysis
Creatine + resistance training body composition
human clinical
Safety of creatine supplementation across clinical trials
human RCT meta-analysis
Creatine + resistance training strength gains in adults <50
4V Take
Current pooled human evidence does not show a meaningful decline in kidney filtration from standard creatine supplementation in generally healthy study populations. Creatine can raise blood creatinine, which may make creatinine-based kidney estimates look worse even when more direct filtration measurements do not show the same change. That distinction is why a creatinine rise alone is not proof of kidney injury.
- Evidence bucket
- human clinical
- Research stage
- established
- Route / format
- oral creatine supplementation
Explore the evidence
human RCT meta-analysis
Impact of creatine supplementation on kidney health
human clinical
Safety of creatine supplementation across clinical trials
human RCT meta-analysis
Creatine + resistance training strength gains in adults <50
4V Take
Creatine monohydrate has one of the larger human safety databases among sports supplements and has generally been well tolerated in studied populations. Across hundreds of clinical trials, overall reported side-effect frequency has been similar to placebo. That is population-level evidence, not a guarantee for every individual medical situation.
- Evidence bucket
- human clinical
- Research stage
- established
- Route / format
- oral creatine, mostly monohydrate
Explore the evidence
human clinical
Safety of creatine supplementation across clinical trials
human RCT meta-analysis
Creatine + resistance training strength gains in adults <50
human RCT meta-analysis
Creatine strength and power meta-analysis
4V Take
Yes. In older adults, creatine added to resistance training can improve some measures of lower-body strength and lean tissue beyond training alone. The effect is not identical across every outcome or study. The strongest healthy-aging case is as an adjunct to resistance training, not a substitute for it.
- Evidence bucket
- human clinical
- Research stage
- developing clinical
- Route / format
- oral creatine + resistance training in older adults
Explore the evidence
human clinical
Safety of creatine supplementation across clinical trials
human RCT meta-analysis
Creatine + resistance training strength gains in adults <50
human RCT meta-analysis
Creatine strength and power meta-analysis
4V Take
Creatine may have cognitive benefits, particularly for memory, but this evidence is less mature than the strength and performance literature. A 2024 meta-analysis reported encouraging signals, but it also received a correction and later methodological criticism, so 4V keeps the confidence more modest here. The brain research is worth following without treating it as settled.
- Evidence bucket
- human clinical
- Research stage
- developing clinical
- Route / format
- oral creatine monohydrate
Explore the evidence
human clinical
Safety of creatine supplementation across clinical trials
human RCT meta-analysis
Creatine + resistance training strength gains in adults <50
human RCT meta-analysis
Creatine strength and power meta-analysis
Selected Sources
Explore the evidence.
Open an approved public source to inspect its study context, limitations, and original record where available.
human clinical
Safety of creatine supplementation across clinical trials
2025 · PMID: 40198156 · peer reviewed
human RCT meta-analysis
Creatine + resistance training strength gains in adults <50
2024 · PMID: 39519498 · peer reviewed
human RCT meta-analysis
Creatine strength and power meta-analysis
2025 · PMID: 40944139 · peer reviewed
human RCT meta-analysis
Creatine + resistance training body composition
2024 · PMID: 39074168 · peer reviewed
human RCT meta-analysis
Impact of creatine supplementation on kidney health
2026 · PMID: 42507286 · peer reviewed
Research Status
Living research, deliberately tracked.
- Evidence searched globally through:
- August 2026
- Last reviewed
- August 22, 2026
- Version
- 1.0
What Changed
Current record.
No later approved public release is available beyond the current topic record.
Evidence Boundaries
What are researchers still working out?
Study settings, measures, and limitations matter. A mechanism does not establish an outcome, animal or laboratory findings do not establish a human benefit, and a small study does not create consensus. Open each selected source for the approved record behind its finding.
Related Research
Continue with context.
Connections are limited to approved topic context. Each linked topic keeps its own evidence boundaries and Research Stage.
Resistance Training & Healthy Aging
Training contextRead Creatine alongside the Research topic that provides the training context discussed on both pages.
Research Stage: Established
Each topic keeps its own evidence boundaries and Research Stage.
Protein Intake & Muscle Preservation
Nutrition contextRead Creatine alongside the Research topic that provides protein and muscle-preservation context.
Research Stage: Established
Each topic keeps its own evidence boundaries and Research Stage.
Applied Plans
Carry the context forward.
These existing member resources extend the topic in a general plan context. They do not change the research record above or provide individualized guidance.
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