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The evidence

What creatine does. What it does not.

Creatine is one of the most studied sports supplements in the world. Here is what it does, what it does not, and the papers we actually read. We link to them. We do not quote unpublished “internal studies.”

What it is

Creatine is a compound your liver makes from amino acids, and that you also get from meat and fish. Muscles store it as phosphocreatine — a quick energy reserve for short, hard efforts: a sprint, a heavy set, a repeated burst. Michel-Eugène Chevreul identified it in meat extract in 1832 and named it from the Greek for flesh. The powder in this tub is the same molecule, as creatine monohydrate.

What it does

Creatine is the reserve your muscles use when the effort is short and it has to happen again. Two things follow from that — and we say both.

Creatine increases physical performance in successive bursts of short-term, high-intensity exercise.

For adults performing high-intensity exercise, at 3 grams of creatine a day.

Regulation (EU) No 432/2012 · EFSA ID 739, 1520, 1521, 1522, 1535, 1536, 1572, 3822

Daily creatine consumption can enhance the effect of resistance training on muscle strength in adults over the age of 55.

For adults over 55 who do regular resistance training, at 3 grams of creatine a day.

Regulation (EU) 2017/672 · EFSA Journal 2016;14(2):4400

The first is the next sprint, the next set, the next burst. The second is for people over 55 who already lift. Neither replaces the work.

What it does not do

In 2024 the European Food Safety Authority reviewed an application that creatine improves memory or focus. It concluded that a cause-and-effect relationship has not been established. Some trials report effects on memory in narrow conditions. That is interesting. It is not a claim we will sell. If the evidence changes, this page will change with it.

How to take it

Daily use

One 5 g serving, every day. Mix with water or in a meal. Timing is not magic; consistency is. Muscle creatine stores rise over weeks, not hours.

Loading is optional

A loading phase (about 20 g per day, split, for 5–7 days) saturates stores faster. 3–5 g daily reaches a similar saturation in roughly three to four weeks. Skip loading if your stomach prefers it.

Drink water

Creatine draws water into muscle. That is cell hydration, not “bloat” in the cartoon sense. Keep daily fluids sensible, especially in training heat.

Who should ask a doctor first

Food supplements are not medicines. If you are pregnant, breastfeeding, under 18, or have kidney disease, talk to a clinician before using creatine.

Papers we actually read

This is not a systematic review. It is the short shelf we use to keep the marketing honest. Follow the links.

Then buy the molecule, not the myth.

500 g of creatine monohydrate. Unflavoured. Micronised. For the next sprint, the next set, the next burst. Ships in Ireland.

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