3, 5g daily saturates muscle creatine stores in 28 days. No loading required. Evidence-based dosing guide with RCT citations and honest caveats.
From this read
The short answer is 3, 5g daily for most people, enough to saturate muscle creatine stores within three to four weeks without a loading phase. If you want faster saturation, the loading literature points to 20g per day split across four doses for five to seven days, followed by 3, 5g maintenance. Both routes arrive at the same endpoint. The difference is timing, not outcome.
What the evidence actually shows
I want to be honest about something before going any further. Creatine has one of the strongest evidence bases in sports nutrition, but a lot of the dosing recommendations floating around online are either misread from older protocols or inflated for marketing purposes. So let me just walk through what the primary literature actually says.
The most directly relevant piece of dosing data I keep coming back to is from Preen et al. (2003), who compared loading and maintenance protocols on creatine uptake in human skeletal muscle. Their findings confirmed that a lower daily dose, without any loading phase, achieves equivalent total muscle creatine saturation, just over a longer period. The practical implication: if you're not preparing for a competition next week, there's no compelling reason to load.
On dietary exposure, Ostojic et al. (2024) analysed creatine intake data from the 2017, 2018 National Health and Nutrition Examination Survey across U.S. older adults. The data suggested that habitual dietary creatine intake from food sources, primarily meat and fish, sits well below the 3g/day threshold most researchers consider functionally relevant, which goes some way to explaining why supplementation has measurable effects even in people who eat animal products regularly.
And on the performance side, the registered EU/UK Nutrition and Health Claims Register wording is unambiguous: creatine increases physical performance in successive bursts of short-term, high intensity exercise. That claim is backed by decades of RCT data. It's one of the few supplement claims in this category that isn't hedged into meaninglessness by the regulator.
What I'd caution against is assuming that more is always better. The relationship between dose and muscle creatine concentration plateaus once stores are saturated. Taking 10g when 5g achieves the same saturation doesn't add benefit, it just adds cost and, in some people, mild gastrointestinal discomfort.
What's actually happening in the body
Creatine's mechanism is well understood, which is part of why I trust the evidence base more than I do for most supplements.
Your muscles store creatine primarily as phosphocreatine (PCr). During short, intense efforts, a sprint, a heavy lift, a burst of effort lasting under ten seconds, your body's demand for ATP outpaces what oxidative phosphorylation can supply in real time. PCr acts as a rapid phosphate donor, regenerating ATP from ADP almost instantaneously via the creatine kinase reaction. The more PCr you have stored, the longer you can sustain that high-intensity output before fatigue sets in.
The body synthesises creatine endogenously, primarily in the liver and kidneys, from the amino acids glycine and arginine, with a methylation step involving SAM (S-adenosylmethionine). Xue et al. (1988) provided early quantitative data on creatine metabolism across tissues, helping establish how creatine is distributed and turned over. The body produces roughly 1, 2g per day endogenously. Dietary intake from meat and fish contributes another 1, 2g in omnivores. Supplementation on top of this is what pushes muscle stores toward saturation.
Muscle creatine uptake is transporter-mediated, specifically via the SLC6A8 creatine transporter. This transporter is sodium-dependent and can become downregulated with prolonged high-dose supplementation, which is one mechanistic reason why cycling protocols exist, though the evidence that cycling is necessary for most people is actually fairly thin. The honest answer is: the long-term data either way is not yet strong enough to be definitive.
One area that's attracted growing research interest is creatine's role in the brain. Graham et al. (1994) used proton magnetic resonance spectroscopy to measure cerebral metabolites including creatine after human stroke, demonstrating that creatine compounds are measurable and metabolically active in brain tissue. This isn't a performance claim, it's mechanistic context. The brain has high energy demands and expresses creatine kinase. Whether oral supplementation meaningfully affects brain creatine levels in healthy adults is still an active area of investigation, and I'd be overstating it to present this as settled.
Glycine is worth a brief mention here. It's a direct precursor in creatine synthesis, and it's present in the KōJō Daily Formula at 2,000mg alongside 5,000mg of creatine monohydrate. Research into glycine's independent role in energy metabolism is ongoing, and large-scale human trials are limited, so I won't overstate what it does on its own. But the rationale for including it alongside creatine is grounded in the biosynthetic pathway.
Dosing: what the clinical evidence supports
Here's how I'd summarise the dosing picture based on the RCT literature:
Maintenance dosing: 3, 5g per day
This is the most consistently supported range across the literature. Preen et al. (2003) demonstrated that a maintenance-only protocol achieves full muscle creatine saturation, it just takes approximately 28 days rather than 7. For anyone supplementing for general energy support or long-term performance rather than an imminent competition, this is the approach I'd default to. No loading phase, no gastrointestinal drama, same endpoint.
Loading phase: 20g per day for 5, 7 days
The loading protocol, typically 4 × 5g doses spread across the day, saturates muscle creatine stores within roughly five to seven days. The evidence for this is solid. The main practical downside is that some people experience bloating or loose stools at 20g/day. Splitting doses across meals largely mitigates this. After loading, dropping to 3, 5g/day maintains saturation.
Body weight-adjusted dosing
Some researchers use a body weight-adjusted figure of approximately 0.03g/kg/day for maintenance and 0.3g/kg/day during loading. For a 75kg person, that works out to roughly 2.25g and 22.5g respectively, broadly consistent with the flat-dose recommendations above. I don't think the precision here is clinically meaningful for most people. The 3, 5g figure is a reasonable working target.
The KōJō Daily Formula provides 5,000mg of micronised creatine monohydrate per daily serving, sitting at the upper end of the evidence-supported maintenance range. Micronised creatine has a smaller particle size than standard monohydrate, which may help with solubility and tolerability, though the bioavailability data between the two forms doesn't show a meaningful difference.
For more on how creatine dosing intersects with age-related considerations, I've written separately about the benefits of creatine for men over 40 what the data says, that piece goes deeper on the muscle and cognitive angle specifically.
Does timing matter?
This is a question I get fairly often. The honest answer is: probably not much, once you're already at saturation.
There's some data suggesting that taking creatine close to exercise, particularly post-workout, may offer a marginal advantage in terms of uptake, possibly because insulin-mediated transport is upregulated after training. But the effect sizes in these studies are small, the sample sizes are often modest, and the practical difference for someone who just wants consistent daily supplementation is minimal.
What matters more is consistency. Missing a day occasionally when you're at maintenance won't meaningfully affect your muscle creatine levels, the half-life of stored creatine is long enough that a single missed dose has negligible impact. What erodes saturation is extended periods without supplementation, typically over several weeks.
I take mine in the morning, mixed into water. Not because the evidence strongly supports morning over evening, but because it fits my routine and I actually remember to take it.
Loading vs. no loading: is there a right answer?
I've seen this debated endlessly. My read of the evidence is that it's a question of time horizon, not efficacy.
If you need muscle creatine stores elevated within a week, say, you're an athlete with a competition in ten days, loading makes sense. If you're supplementing for general energy support, long-term physical performance, or any of the other reasons people take creatine, the slower maintenance-only approach arrives at the same destination without the higher short-term dose and its associated tolerability issues.
Stogov et al. (2015) examined muscle metabolism under conditions of significant metabolic stress, providing context for how creatine-related energy systems respond when demand is high. While this study wasn't a direct creatine supplementation trial, it offers useful mechanistic framing for why maintaining adequate creatine availability matters under physiological load.
One thing I'd push back on is the idea that loading is inherently superior. The data from Preen et al. (2003) is fairly clear that the endpoint, muscle creatine saturation, is equivalent. You're paying for speed, not for a higher ceiling.
Who might need a different dose?
The standard 3, 5g recommendation is based largely on research in healthy adults, with a bias toward younger males in much of the earlier literature. A few populations are worth flagging:
- Older adults: Muscle creatine content may decline with age, and some researchers have argued that older adults may benefit from doses at the higher end of the maintenance range. Ostojic et al. (2024) specifically examined creatine intake in U.S. older adults, finding that dietary intake is often well below levels associated with functional benefit.
- Vegetarians and vegans: Without dietary meat or fish, endogenous synthesis is the only creatine source. Baseline muscle creatine levels in vegetarians are typically lower than in omnivores, which means supplementation may produce a larger relative effect. The 3, 5g/day range still applies, but the starting point is different.
- People on certain medications: If you're taking statins, it's worth knowing that (2022) conducted a large-scale meta-analysis on statin-related muscle symptoms. Creatine is sometimes discussed in this context because of its role in muscle energy metabolism, but I'd encourage anyone on statins to discuss supplementation with their GP rather than self-directing based on online reading.
- People with kidney conditions: Creatine is metabolised to creatinine, which is cleared by the kidneys. In healthy adults, the evidence does not suggest that standard doses are harmful to kidney function, but if you have pre-existing kidney disease, this is a conversation to have with a clinician, not a supplement brand.
If energy and fatigue are your primary concern rather than athletic performance specifically, it's worth reading the broader energy fatigue hub, creatine is one piece of a larger picture.
What about the other ingredients alongside creatine?
I want to be transparent here about what I know and what I don't.
Taurine is present in the KōJō formula at 2,000mg. Research into taurine's role in cellular energy metabolism and muscle function is ongoing, and large-scale human RCTs are limited, I won't claim it does something specific in the absence of that evidence.
Aged Garlic Extract (600mg), Olive Leaf Extract (500mg), Grape Seed Extract (200mg), and Pine Bark Extract (150mg) are all included for reasons related to antioxidant biology and vascular health. The human trial data for each is at varying stages of maturity, and I'd be doing you a disservice to present any of them as proven performers. The research is interesting. It's not yet conclusive at the doses and populations most relevant to the people taking this formula.
Vitamin C contributes to the reduction of tiredness and fatigue, contributes to normal energy-yielding metabolism, and contributes to the protection of cells from oxidative stress, all registered claims with solid mechanistic and clinical backing. The 500mg included in the formula is a meaningful dose.
If skin and hair health is something you're also thinking about alongside energy, Vitamin C contributes to normal collagen formation for the normal function of skin, you might also find the biotin supplement uk skin hair evidence piece useful as a companion read.
Frequently asked questions
Is 5g of creatine per day enough, or do I need more?
5g per day is at the upper end of the evidence-supported maintenance range and is sufficient to achieve and maintain muscle creatine saturation in most adults without a loading phase, as demonstrated by Preen et al. (2003). Taking more than this does not appear to produce additional benefit once stores are saturated.
Do I need to load creatine, or can I just take 5g a day from the start?
You can take 3, 5g daily without loading and reach full muscle saturation in approximately 28 days, compared to roughly 5, 7 days with a loading protocol, according to Preen et al. (2003). Loading is faster but not superior in the long run. If timing isn't urgent, skipping the loading phase is a reasonable choice.
Does creatine dosing need to change as you get older?
Possibly. Ostojic et al. (2024) found that dietary creatine intake in older U.S. adults is often well below levels associated with functional benefit. Muscle creatine content may decline with age, suggesting that consistent supplementation at the higher end of the maintenance range, around 5g/day, may be particularly relevant for older adults.
Is creatine safe to take daily long-term?
The safety profile of creatine monohydrate at 3, 5g/day in healthy adults is well established across decades of research. There is no credible evidence from the literature that standard maintenance doses are harmful to kidney or liver function in people without pre-existing conditions. If you have kidney disease or are on medication affecting renal function, speak to your GP first.
Should vegetarians take more creatine than omnivores?
Not necessarily more, but the starting context is different. Vegetarians typically have lower baseline muscle creatine stores because dietary intake from meat and fish is absent. Xue et al. (1988) provided early quantitative data on tissue creatine distribution. The standard 3, 5g/day dose still applies, but the relative effect of supplementation may be larger in vegetarians than in omnivores.
Does it matter what time of day I take creatine?
Once you're at saturation, timing appears to matter very little. Some data suggests a marginal advantage to post-exercise dosing, possibly due to insulin-mediated transporter activity, but effect sizes are small and study samples are often limited. Consistency across days matters far more than the specific hour. Take it when it fits your routine and you'll actually remember it.
My honest take
I started taking creatine before I built KōJō, and my view of it hasn't changed much since I started reading the primary literature more carefully. It's one of the few supplements where the mechanism is well understood, the dosing is well characterised, and the performance claim is registered with the regulator rather than invented by a marketing team.
The 3, 5g/day range is where I'd point almost everyone. It's the dose that appears in the most credible RCTs, it's achievable from a single daily serving, and it doesn't require the logistical complexity of a loading phase unless you have a specific short-term reason to saturate quickly.
What I'm less certain about is the longer-term picture for non-performance outcomes, brain health, cognitive function with ageing, and so on. The mechanistic rationale is interesting. Graham et al. (1994) demonstrated that creatine compounds are measurable and metabolically active in human brain tissue. Roenneberg et al. (1988) showed creatine's involvement in cellular energy timing systems at a fundamental biological level. But I'd be getting ahead of the evidence if I told you that taking 5g a day would meaningfully affect your cognition. The human data on that is thin, and I'd rather say so directly than dress it up.
What I can say is that I take 5g of micronised creatine monohydrate every day, I've done so consistently for years, and I think the evidence supports that decision. I'm not asking you to take my word for it, I'm asking you to read the studies I've cited and draw your own conclusions.
That's the only standard I'm comfortable holding KōJō to.
This article is for informational purposes only and does not constitute medical advice. Consult your healthcare provider before starting any supplement regimen.
References (8 studies)
- Preen et al. (2003), Creatine supplementation: a comparison of loading and maintenance protocols on creatine uptake by human skeletal muscle. PMID: 12660409
- Ostojic et al. (2024), Dietary intake of creatine and risk of medical conditions in U.S. older men and women: Data from the 2017, 2018 National Health and Nutrition Examination Survey. PMID: 34646542
- Xue et al. (1988), Quantitative study on creatine metabolism in sheep tissues. PMID: 3390194
- Graham et al. (1994), Early temporal variation of cerebral metabolites after human stroke. A proton magnetic resonance spectroscopy study. PMID: 8248973
- Stogov et al. (2015), Muscle metabolism during tibial lengthening with regular and high distraction rates. PMID: 25123675
- (2022), Effect of statin therapy on muscle symptoms: an individual participant data meta-analysis of large-scale, randomised, double-blind trials. PMID: 36049498
- Roenneberg et al. (1988), Creatine accelerates the circadian clock in a unicellular alga. PMID: 3405289
- Tossenberger et al. (2017), Digestibility and metabolism of dietary guanidino acetic acid fed to broilers. PMID: 26994189
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