Claim deep dive·Strong evidence·Updated July 13, 2026
Evidence review: Creatine is safe for long-term use
Decades of trials in healthy adults show no harm to kidney function. The ISSN position stand explicitly endorses long-term safety.
The bottom line.
The strongest studies.
Sorted by study tier (meta-analyses first, then RCTs, then reviews) and recency. Every entry links to PubMed by PMID, and every citation on this page points here.
Meta-analyses & systematic reviews
2- 1Risk of Adverse Outcomes in Females Taking Oral Creatine Monohydrate: A Systematic Review and Meta-AnalysisSource linkedPMIDde Guingand DL, Palmer KR, Snow RJ et al. · Nutrients · 2020
- 2Effects of Creatine Supplementation on Renal Function: A Systematic Review and Meta-Analysis.Source linkedPMIDde Souza E Silva A, Pertille A, Reis Barbosa CG et al. · Journal of Renal Nutrition · 2019
Creatine supplementation did not significantly alter serum creatinine or plasma urea, indicating no adverse effects on renal function at studied doses and durations.
Reviews & position papers
3- 3Safety of creatine supplementation: analysis of the prevalence of reported side effects in clinical trials and adverse event reportsSource linkedPMIDOstojic SM et al. · Food Chem Toxicol · 2025
Creatine supplementation is generally well tolerated and not associated with clinically significant side effects in clinical trials.
- 4Common questions and misconceptions about creatine supplementation: what does the scientific evidence really show?Source linkedPMIDAntonio J et al. · J Int Soc Sports Nutr · 2021
Scientific evidence does not support claims that creatine causes kidney damage, hair loss, or dehydration; it is safe for healthy individuals.
- 5International Society of Sports Nutrition position stand: safety and efficacy of creatine supplementation in exercise, sport, and medicineSource linkedPMIDKreider RB et al. · J Int Soc Sports Nutr · 2017
Short and long-term supplementation (up to 30 g/day for 5 years) is safe and well-tolerated; creatine can improve exercise performance and may have neuroprotective benefits.
What pushes back.
Caveats, null findings, and methodological limits that hold the tier where it is.
What the evidence supports.
What we recommend
Healthy adults can take 3 to 5 g/day indefinitely. Anyone with pre-existing kidney disease should consult their physician. 2,3
Tier criteria: /methodology/evidence-tiers. Sourcing standards: /methodology/interactions.
Common questions.
Quick answers drawn from the verdict, evidence, and recommendation above.
Does the evidence support the claim that creatine is safe for long-term use?
Decades of trials in healthy adults show no harm to kidney function. The ISSN position stand explicitly endorses long-term safety.
How strong is the evidence behind Creatine and Creatine Monohydrate for this claim?
NutriStack rates this as Strong evidence, meaning multiple high-quality meta-analyses or systematic reviews converge on the same finding. Full tier criteria are at https://nutristackapp.com/methodology/evidence-tiers.
What contrary evidence or caveats apply?
Serum creatinine rises slightly (a marker artifact, not actual kidney damage). Long-term safety data are concentrated in healthy adults; very limited data in pediatric and pregnant populations.
What does NutriStack recommend?
Healthy adults can take 3 to 5 g/day indefinitely. Anyone with pre-existing kidney disease should consult their physician.
Selected claims, opened up
This is how NutriStack presents an evidence review.
Each published claim review shows its verdict, attached studies, contrary evidence, dose context, and limits. Coverage is selective rather than a claim that every database assertion has received the same review.