Creatine is one of the most studied compounds in sports nutrition and human performance. It is not a stimulant and it is not a shortcut. Creatine is a naturally occurring molecule stored largely in skeletal muscle, where it helps regenerate ATP (adenosine triphosphate), the immediate energy currency used during high-intensity work. The International Society of Sports Nutrition (ISSN) position stand concludes that creatine monohydrate is effective for increasing high-intensity exercise capacity and supporting lean mass gains during training (Kreider et al., 2017, Journal of the International Society of Sports Nutrition). https://pubmed.ncbi.nlm.nih.gov/28615996/

What creatine actually does in the body

Most stored creatine exists as phosphocreatine. During short, intense bursts of effort, phosphocreatine donates a phosphate group to rapidly regenerate ATP from ADP. This supports repeated high-output efforts such as heavy lifting, sprinting, and interval training. The ISSN paper summarizes this mechanism and the performance outcomes seen across the evidence base.
https://pubmed.ncbi.nlm.nih.gov/28615996/

Creatine and muscle performance

Creatine monohydrate consistently improves measures of strength and performance in high-intensity, short-duration tasks. A widely cited meta-analysis found that creatine supplementation increases body mass and improves performance outcomes in these contexts (Branch, 2003, International Journal of Sport Nutrition and Exercise Metabolism). https://pubmed.ncbi.nlm.nih.gov/28615996/

In plain terms, creatine helps many people train harder and sustain output across sets. Over time, that increased training capacity supports adaptation.

Lean mass and training adaptation

Creatine’s lean mass effect is largely training-mediated. It tends to support greater gains when paired with resistance training, because the athlete can often do more total work. ISSN’s position stand reviews the broader literature and concludes creatine monohydrate supports increases in lean mass during training.
https://pubmed.ncbi.nlm.nih.gov/28615996/

Some people see a small early increase on the scale due to increased intracellular water in muscle tissue, which is a known physiologic effect of creatine.

Cognitive performance, stress, and sleep loss

Creatine matters to the brain as well because the brain is an energy-intensive organ that relies on ATP. A systematic review and meta-analysis found oral creatine administration may improve short-term memory and reasoning in healthy individuals, with potential benefit in stressed or aging populations (Avgerinos et al., 2018, Experimental Gerontology). https://pubmed.ncbi.nlm.nih.gov/29704637/

In a controlled study, creatine supplementation improved mood and performance on tasks that stress the prefrontal cortex after 24 hours of sleep deprivation (McMorris et al., 2006, Psychopharmacology). https://pubmed.ncbi.nlm.nih.gov/16416332/

Creatine is not a replacement for sleep. The point is that cellular energy buffering can matter more when demand is high.

Healthy aging and muscle preservation

Creatine has meaningful relevance for aging because maintaining muscle mass and strength is central to functional independence. A meta-analysis focused on healthy aging concluded creatine supplementation during resistance training can enhance muscle mass gain, strength, and functional performance compared with resistance training alone (Devries and Phillips, 2014). https://pubmed.ncbi.nlm.nih.gov/24576864/

A separate paper specifically examining creatine supplementation during resistance training in older adults also supports improvements in lean tissue mass and strength outcomes (Chilibeck et al., 2017). https://pmc.ncbi.nlm.nih.gov/articles/PMC5679696/

Safety and kidney concerns

Creatine monohydrate has decades of human data supporting safety in healthy individuals at recommended dosages. ISSN addresses safety directly in its position stand. https://pubmed.ncbi.nlm.nih.gov/28615996/

For kidney function specifically, a classic study found that short-, medium-, and long-term creatine supplementation did not induce detrimental effects on kidney function in healthy individuals (Poortmans & Francaux, 1999).
https://pubmed.ncbi.nlm.nih.gov/10449011/

People with known kidney disease or medical conditions should consult a clinician before supplementing.

Evidence-based dosing

Most evidence-based protocols use either:

• Optional loading: about 20 g/day split into smaller doses for 5 to 7 days

• Maintenance: 3 to 5 g/day consistently

ISSN summarizes that consistent daily dosing is sufficient to increase and maintain muscle creatine stores over time.
https://pubmed.ncbi.nlm.nih.gov/28615996/

Consistency matters more than timing.

Introducing Clean Creatine

Clean Creatine is built around the ingredient with the strongest evidence base.

Supplement Facts (as shown):

• Serving size: 5 g (1 scoop)

• Servings per container: 60

• Creatine monohydrate (as OptiCreatine) 5,000 mg per serving

A 5 g daily serving aligns with the commonly used and well-studied maintenance range discussed in the ISSN position stand. https://pubmed.ncbi.nlm.nih.gov/28615996/

Creatine monohydrate remains the gold standard because it is the form used in the bulk of published trials, with consistent evidence for strength, power, training adaptation, and a strong safety profile.

The bigger picture

Creatine supports the rapid energy system that drives high-output performance. It is strongly supported by decades of research for strength and high-intensity training outcomes, and it also has credible evidence for cognitive resilience in high-demand conditions like sleep deprivation.

Clean Creatine keeps it simple: creatine monohydrate, full 5 g dosing, aligned with the research.