Creatine Beyond the Gym: The Cognitive Claims, Graded

The strength evidence is settled. The brain evidence is early, and the doses being discussed are not the ones on the label.

Creatine monohydrate is the most thoroughly studied ergogenic supplement in existence, with a consistent small-to-moderate benefit for strength, power, and lean mass when combined with resistance training, and a safety record spanning decades in healthy adults with normal kidney function.

The newer interest is neurological. Creatine buffers cellular energy in tissue with high ATP turnover, and the brain qualifies. Trials in sleep-deprived and cognitively stressed participants have shown modest improvements in working memory and processing speed; trials in rested, well-fed participants mostly show nothing.

Dose is where the claims outrun the label. The cognitive protocols under investigation use closer to 10 g per day, sometimes more, because brain uptake is slower and less complete than muscle uptake. Whether that dose is worth taking on the current evidence is genuinely unsettled.

For the settled use case: 3 to 5 g daily of plain monohydrate, no loading phase needed, timing irrelevant. Expect a kilogram or two of water weight in the first weeks, which is intracellular and not a problem.

Editorial note: this article summarises published research for general information. It is not medical advice. Discuss any intervention with a qualified clinician.