Topic hub
Everything you need to know about Creatine
Creatine is the supplement with the most trial evidence per gram on Earth. Form matters less than people think — monohydrate has the cleanest data and beats the premium variants in every head-to-head trial.
A pile of "creatine causes hair loss / kidney damage / dehydration" claims have been comprehensively rebutted in 2022–2024 reviews. Long-term safety is the most-studied part of the file.
The short version
What the evidence shows: Tier 1 evidence for strength, power, lean mass, and (added in 2024 with the Xu meta-analysis) memory, attention, and information-processing speed. Tier 2 for older-adult muscle preservation (HMB) and tendon recovery (collagen+vitamin C). Safety signal is excellent across decades of trials.
Top three picks: Creatine monohydrate (the workhorse, by a huge margin); Whey protein (paired with resistance training and creatine for muscle gains); Collagen peptides + vitamin C (tendon and ligament collagen synthesis, taken 30–60 min pre-exercise).
Creatine is unusual in supplement-land because the trial record is genuinely overwhelming — over 500 RCTs, 3+ decades of safety data, and a 2024 cognition meta-analysis (Xu et al., PMID 39070254) that confirmed memory, attention, and processing-speed gains across 16 RCTs and 492 participants. The premium forms — HCl, ethyl ester, buffered, micronised — are marketing on solubility or GI tolerance, not on outcomes. Monohydrate at 3–5 g/day reaches the same phosphocreatine saturation as loading-then-maintenance and produces the same long-term outcomes; the loading phase is convenience, not requirement. The folklore concerns — hair loss, kidney damage, dehydration, bloating — were debunked in the 2017 ISSN position stand and the 2024 Antonio review. The remaining nuance is dose timing (post-workout edges pre-workout in some trials, but the effect is small) and population-specific use cases: HMB and HMB+creatine stacks earn their place in older adults, post-injury, and during caloric deficits, where lean-mass preservation matters more than peak hypertrophy. Whey protein remains the anchor partner — the 2024 78-trial meta-analysis confirms its role in muscle synthesis when paired with resistance training. SupplementScore tracks 7 creatine-and-muscle-preservation supplements across 8 in-depth articles, 3 condition protocols, and 6 head-to-head comparisons. The pediatric angle is also handled: creatine for teen athletes is safer than the locker-room rumour mill suggests, with the ISSN and a 2024 pediatric review finding no signal of harm at standard doses.
Top supplements in the creatine cluster
Each card shows the SupplementScore composite rating, evidence sub-scores, and a one-line summary. Click through for full dosing, timing, and safety detail.
The most-studied supplement in existence. Over 500 RCTs confirm strength, power, lean mass, and a 2024 cognition meta-analysis (Xu, PMID 39070254) showed memory…
Fast-digesting complete protein. A 2024 meta-analysis of 78 trials (4,755 people) confirmed it significantly increases lean mass and strength when combined with…
Specific collagen peptides taken with vitamin C 30–60 min pre-exercise increase tendon collagen synthesis. The Shaw 2017 trial is the foundational evidence.
A leucine metabolite that helps preserve lean muscle, especially in older adults, during caloric deficits, and in clinical settings. Wu 2015, Phillips 2022, and…
The free-acid form of HMB absorbs faster than the calcium salt and may peak ~30 min sooner — small advantage for the pre-workout window.
Pairs the two strongest muscle-preservation supplements in older adults. Synergy is plausible but the human evidence for additivity is thin.
A more soluble form of creatine. Better mixability and possibly fewer GI side effects, but no clinical advantage over monohydrate on strength or lean mass.
Articles in this hub
In-depth explainers, breakthrough research updates, and myth checks — grouped by editorial category.
Research updates
- Creatine and brain function in older adults: the 2024-2025 RCT updateNew RCT evidence on memory, attention, and processing speed in adults over 60.
- Creatine for brain health: what the new meta-analyses actually showThe 2024 Xu meta-analysis (16 RCTs) on memory, attention, and information-processing speed.
- Creatine for older adults: muscle, brain, and boneWhy creatine is plausibly the single best supplement for the 60+ population.
- HMB for muscle after 50: why older adults need it mostThe sarcopenia case for HMB and where it fits alongside protein and resistance training.
Guides
- Creatine loading and daily timing: pre vs post workout and the co-ingestion trial evidenceWhether to load, when to take it, and whether food co-ingestion changes the outcome.
- How to pick a creatine powder: Creapure vs generic and the contamination questionWhy brand and source matter for purity, and which certifications close the gap.
- Protein for aging muscle: the sarcopenia dose is higher than you thinkWhy older adults need ~1.2–1.6 g/kg/day — well above the RDA — to maintain muscle.
Conditions where creatine is part of the protocol
Head-to-head comparisons
Common questions
Do I really need to load creatine?
No. Loading (20 g/day for 5–7 days) saturates phosphocreatine stores faster — useful if you need the effect within the first two weeks. Otherwise, 3–5 g/day reaches the same saturation in about 3–4 weeks with no GI risk and identical long-term outcomes. The loading phase is a convenience option, not a performance requirement.
Is creatine monohydrate as good as the expensive forms?
Yes. Head-to-head trials show monohydrate matches or beats HCl, ethyl ester, buffered, and micronised forms on every measured outcome — strength, lean mass, cognition, and recovery. The premium forms sell on better solubility or fewer GI effects, not better results. Monohydrate is the form behind almost every positive trial.
Does creatine cause kidney damage or hair loss?
No clinical evidence supports either claim. The kidney concern is based on a single case report from 1998 and a confused reading of normal creatinine elevations. The DHT/hair-loss myth comes from one 2009 rugby study that has never been replicated. Multi-decade safety reviews in healthy adults and older adults are clean.
Is creatine safe for teenagers?
Yes for post-pubertal athletes when used at standard doses (3–5 g/day) with a clinician aware of it. The ISSN position stand and a 2024 pediatric review found no safety signal in adolescent athletes. The real risks in this age group come from contaminated pre-workouts and SARMs, not creatine.
Should women take creatine?
Yes. The 2024 cognition meta-analysis found larger effects in women than men, particularly for memory and reaction time. Female athletes also show strength and lean-mass gains comparable to males. The historical "creatine is a male supplement" framing was a marketing artefact, not a biological one.
What is HMB and is it worth adding to creatine?
HMB is a leucine metabolite that reduces muscle protein breakdown. In older adults, hospitalised patients, and people in a caloric deficit it earns its keep — Phillips 2022 and Prado 2023 reviews show modest but real lean-mass preservation. In trained young athletes already taking creatine and adequate protein, the additive effect is small.
Evidence sources
- PMID 39070254 — Xu Y et al. 2024 — Creatine and cognition systematic review (16 RCTs, 492 participants).
- PMID 30068354 — Kreider RB et al. 2017 — ISSN position stand on creatine supplementation (foundational).
- PMID 36479221 — Forbes SC et al. 2023 — Creatine supplementation and brain health in healthy adults.
- PMID 36473140 — Candow DG et al. 2022 — Creatine, resistance training, and aging muscle review.
- PMID 25533534 — Wu H et al. 2015 — HMB and lean mass in older adults meta-analysis.
- PMID 35926948 — Phillips SM et al. 2022 — HMB position stand and clinical guidance.
- PMID 37190480 — Prado CM et al. 2023 — HMB in clinical and aging populations review.
- PMID 28642676 — Shaw G et al. 2017 — Vitamin-C-enriched gelatin and collagen synthesis (tendon trial).
- PMID 38715188 — Antonio J et al. 2024 — Common questions and misconceptions about creatine.