Creatines

What is creatine and how does it work in your body

Creatine (methylguanidinoacetate) is a naturally occurring compound that your body synthesises from the amino acids glycine, arginine and methionine. Unless you follow a vegetarian diet, you also obtain it through food – particularly from red meat and fish – with the average daily dietary intake sitting at around 1–2 g.

It's also worth noting that creatine is nothing new. Back in 1832, French chemist Michel Chevreul first isolated it from muscle tissue. Since then, creatine has been the subject of more than 500 clinical studies, and both its efficacy and safety are well established.

How does creatine work? In brief

The majority of creatine in the body (approximately 95%) is stored in our skeletal muscle, with roughly two thirds of that in the form of phosphocreatine. And it's phosphocreatine that really matters: it acts as a rapid-access energy reserve.

Whenever your muscles demand immediate, high-intensity output – a sprint, a jump, a heavy rep – phosphocreatine donates its phosphate group and replenishes ATP in a fraction of a second, restoring the cell's primary energy currency.

The catch? Your natural phosphocreatine stores only last for a few seconds of maximal effort. Supplementation can significantly increase these stores – by 20–40% according to the ISSN (Kreider et al., 2017). More fuel, sustained output, faster recovery between sets. It really is that straightforward.

Tip: We explore the full mechanism of action of creatine – and much more – in our in-depth article Everything about creatine – the most comprehensive, unbiased, evidence-based guide!

What is creatine good for: 4 areas where supplementation makes sense

Why has creatine remained at the top of the recommended supplements list for three decades? Because its benefits aren't built on isolated studies or marketing promises – they're backed by hundreds of independent research papers and several large meta-analyses. Discover the four key areas where creatine can make a real difference.

Athletic performance and strength

Creatine excels wherever you need repeated short-burst maximal output: squats, sprints, jumps, throws. Higher phosphocreatine stores allow you to complete more reps with heavier loads and recover faster between sets. Systematic reviews confirm that this effect is consistent across sports and athlete levels (Lanhers et al., 2017). The result? A higher training ceiling = greater adaptation over time.

Muscle building and body composition

Creatine doesn't build muscle on its own – but it creates the conditions that significantly accelerate muscle growth. Through increased training capacity (greater volume and intensity) and improved muscle cell hydration, a stronger anabolic signal is generated. A meta-analysis by Lanhers (2003) showed that athletes combining creatine with resistance training gained significantly more lean muscle mass than those who trained without supplementation – even when following the same training programme.

Brain function, memory and mental performance

It's becoming clear that creatine isn't just a supplement "for muscles and strength". Your nerve cells rely on the phosphocreatine system just as muscle fibres do – and the brain is one of the most energy-demanding organs in the body. Research points to a positive effect of supplementation on short-term memory and cognitive performance, particularly in situations where the brain is under pressure: sleep deprivation, stress, or high cognitive demand (Forbes et al., 2022). For older adults, creatine may offer meaningful support for cognitive reserve as we age.

Healthy ageing and prevention

With age, the body loses muscle mass and strength – sarcopenia is a very real issue that affects the quality of life of millions of people. Creatine, combined with regular physical activity and adequate protein intake, has been shown to demonstrably slow this process. In post-menopausal women, research also indicates a positive effect on bone mineral density (Smith-Ryan et al., 2025). Creatine is therefore not just a supplement for athletes – it's a tool for anyone who wants to age well.

What forms of creatine are available: An overview and how to choose

Today you'll find dozens of forms of creatine on the market. Each has its own specific characteristics – from solubility and bioavailability through to ease of use. Here is an overview of the main categories available at BodyWorld.eu:

Creatine monohydrate – the gold standard

Creatine monohydrate is the most extensively researched and most affordable form of creatine. More than 500 scientific studies confirm its efficacy and safety. No newer form has outperformed it in direct comparison. It's the ideal choice for anyone just starting out with supplementation, as well as for experienced athletes looking for a reliable, proven option.

In our subcategory creatine monohydrate you'll find micronised variants, certified Creapure® creatine, and tablets and capsules – all described in detail with scientific comparisons.

Other forms of creatine – alternatives for specific needs

Alternative forms – creatine HCl, Kre-Alkalyn, creatine ethyl ester, creatine malate, creatine citrate and GAA creatine – were developed to address specific limitations of monohydrate, such as solubility or gastrointestinal tolerance. However, the scientific evidence supporting these forms is considerably more limited.

A detailed breakdown, comparison table and selection guidance can be found in our subcategory other forms of creatine.

Multi-component creatines and blends – all-in-one solutions

Multi-component creatines and blends combine several forms of creatine (e.g. monohydrate + tri-creatine malate + citrate) with synergistic ingredients such as BCAAs, B vitamins and taurine. The added value lies in convenience and improved tolerability for some users, rather than necessarily delivering greater creatine efficacy in itself.

A full product overview, ingredient breakdowns and recommendations can be found in the subcategory multi-component creatines and blends.

Quick overview: Creatine forms at a glance

Creatine tablets, capsules or powder: Which is right for you

The format you choose is primarily a matter of convenience, not efficacy. Creatine tablets and creatine capsules offer precise dosing without measuring and are easy to take on the go – whether you're on holiday or at the office.

The downsides are a higher cost per gram and often needing to swallow several tablets or capsules at once. Powdered creatine remains the most cost-effective option – it mixes easily with water, protein shakes or smoothies. In terms of biological efficacy, both formats are comparable.

Creatine dosing: Core principles that apply to all forms

Whether you opt for monohydrate, HCl or a multi-component blend, a few key principles of creatine dosing always apply:

• A daily dose of 3–5 g is the foundation. Take creatine every day – including rest days. Saturating your muscle stores is a cumulative process; skipping a day slows down the build-up. If you want to speed things up, you can begin with a loading phase (20 g/day split into 4 doses over 5–7 days) – but it isn't necessary; without it, you'll reach full saturation within 3–4 weeks.
• Timing is not critical. Morning, evening, pre-workout, post-workout – all options work. What matters is consistency, not the clock. Many athletes take creatine post-workout with protein and carbohydrates; others take it in the morning with breakfast – both approaches lead to the same outcome.

Is creatine safe? Facts over myths

Whenever you discuss creatine with someone, sooner or later the question comes up: "But what about your kidneys?" The answer is clear: in healthy individuals at a dose of 3–5 g per day, no long-term study (with follow-up periods of up to 5 years) has demonstrated any negative effect on the kidneys, liver or cardiovascular system (Kreider et al., 2017). The International Society of Sports Nutrition (ISSN) classifies creatine as a safe and ethical supplement.

That doesn't mean there are no exceptions. Individuals with chronic kidney disease should consult their doctor before supplementing. Creatine is not recommended for pregnant or breastfeeding women – not because it has been shown to be harmful, but because sufficient human data is lacking.

What about temporary water retention? This is a real phenomenon, but the water is retained inside the muscle cells (intracellularly), not beneath the skin. It does not cause visible bloating and it is not body fat. Most people adjust within the first few weeks.

Find your creatine at BodyWorld.eu

Ready to make creatine a permanent part of your training routine? At BodyWorld.eu we offer the full spectrum of creatine products – from pure creatine monohydrate and alternative creatine forms through to convenient multi-component creatines and blends. Choose based on your goals, preferences and budget – and let the science work for you.