Not medical advice. I am a software engineer, not a physician. This page documents my own protocol and the research I read while building it. Talk to a qualified clinician before changing your supplementation, diet or any treatment. Lab reference ranges quoted here vary by laboratory and by individual.
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Creatine monohydrate is the single most studied sports supplement in history, with over 500 peer-reviewed publications and a comprehensive ISSN (International Society of Sports Nutrition) position stand confirming its safety and efficacy. But creatine is far more than a gym supplement: it is a fundamental cellular energy molecule that benefits the brain, bones, and every tissue with high ATP turnover. The body synthesizes approximately 1 g/day endogenously and obtains another 1 g/day from dietary meat and fish, but supplementation at 5 g/day saturates muscle and brain phosphocreatine stores to levels unachievable through diet alone.
One of the most persistent myths about creatine is that it damages the kidneys. This is categorically false. Creatine may slightly elevate serum creatinine (a metabolic byproduct), which is commonly used as a kidney function marker. However, elevated creatinine from creatine supplementation does not indicate kidney damage — it simply means there is more creatinine production from higher phosphocreatine turnover. GFR (the actual kidney function measure) remains unchanged in every long-term study conducted.
ATP (adenosine triphosphate) is the universal energy currency of cells. When ATP is used for work (muscle contraction, neurotransmission, ion pumping), it loses a phosphate group and becomes ADP. The phosphocreatine system provides the fastest ATP regeneration pathway: creatine kinase transfers the phosphate from phosphocreatine (PCr) to ADP, instantly regenerating ATP. This system powers the first 8-10 seconds of maximum-intensity effort and is the rate-limiting factor in explosive strength and sprint performance. By saturating PCr stores through supplementation, you extend the duration and magnitude of this instant energy supply.
The brain consumes 20% of the body's ATP despite being only 2% of body weight. Brain phosphocreatine buffers this enormous energy demand, and creatine supplementation increases brain PCr levels by 5-15%. Clinical trials demonstrate that creatine supplementation improves working memory, processing speed, and cognitive performance under conditions of sleep deprivation, mental fatigue, and stress. These cognitive benefits are especially pronounced in vegetarians and vegans, who have lower baseline brain creatine levels due to absence of dietary creatine from meat.
Long-term safety: Studies up to 5 years of continuous creatine supplementation at 5-10 g/day show no adverse effects on kidney function, liver function, or any organ system. The ISSN position stand (2017) states: "Creatine monohydrate is the most effective ergogenic nutritional supplement currently available to athletes in terms of increasing high-intensity exercise capacity and lean body mass during training."
| Parameter | Detail |
|---|---|
| Product | BPN — Creatine Monohydrate (Unflavored) |
| Dose | 5 g/day (1 scoop) |
| Timing | Midday (timing is not critical — consistency matters more than timing) |
| Form | Creatine monohydrate — the gold standard; no other form has proven superior |
| Loading phase | Optional: 20 g/day (5g x 4) for 5-7 days saturates stores faster, but 5 g/day reaches saturation within 3-4 weeks |
| Notes | Mix in water or any beverage. No cycling needed. Increase water intake by 500 ml/day (creatine increases intracellular water retention). |
Kreider, R. B., et al. (2017). International Society of Sports Nutrition position stand: safety and efficacy of creatine supplementation in exercise, sport, and medicine. J Int Soc Sports Nutr, 14, 18. PubMed 28615996
Avgerinos, K. I., et al. (2018). Effects of creatine supplementation on cognitive function of healthy individuals: A systematic review of randomized controlled trials. Exp Gerontol, 108, 166-173. PubMed 29704637
Poortmans, J. R., & Francaux, M. (1999). Long-term oral creatine supplementation does not impair renal function in healthy athletes. Med Sci Sports Exerc, 31(8), 1108-1110. PubMed 14600563
| Test | What It Measures | Link |
|---|---|---|
| Kidney Panel (Creatinine / GFR) | Creatinine may increase 10-20% due to higher phosphocreatine turnover — this is NOT kidney damage. GFR (cystatin C-based is more accurate) remains normal. | Lab Tests |
Inform your doctor: If you take creatine, always tell your physician before lab work. Creatinine-based eGFR will appear falsely low (suggesting reduced kidney function) when it is simply a reflection of increased creatine turnover. Request cystatin C-based GFR for a more accurate kidney function assessment.
BPN — Creatine Monohydrate, Unflavored (300 g / 10.6 oz) — $23.19 on iHerb.
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A 2025 pilot trial published in Alzheimer's & Dementia: Translational Research demonstrated that creatine monohydrate supplementation effectively increases both total creatine and phosphocreatine (PCr) levels in skeletal muscle and in the brain, with preliminary evidence of cognitive benefits in Alzheimer's disease patients. A related 8-week study found increased muscle strength and size in AD patients. A 2024 systematic review and meta-analysis confirmed creatine's cognitive benefits across multiple domains — memory, attention time, and processing speed — with the strongest effects observed in individuals under sleep deprivation, females, and those aged 18–60. The emerging "muscle–brain axis" concept positions creatine as a dual-purpose supplement: beyond its well-established role in athletic performance, creatine may increase brain-derived neurotrophic factor (BDNF) production, and 5 g/day for 8 weeks shows promise as an adjunct to CBT for depression.