How to take creatine: how much and when

Creatine monohydrate is the best-researched supplement for strength and performance. All you need is 3 to 5 grams a day, at any time of day, every day including rest days. A loading phase is not necessary, it only makes the effect kick in sooner. In healthy people it is safe long term.

What creatine is and why it works

Creatine is a compound your body makes on its own from amino acids, and you also get it from meat and fish. About 95% of it is stored in your muscles, mostly as phosphocreatine. That acts as a fast energy reserve for short, intense efforts, like a set of squats or a sprint.

Supplementing raises the creatine stores in your muscles by roughly 20 to 40%. That lets you squeeze out one or two extra reps per set and recover faster between sets. Over weeks and months, that adds up to more total work, and so more strength and more muscle.¹

Meta-analyses show that creatine combined with strength training increases strength more than training alone.² The European Food Safety Authority has approved the claim that 3 g of creatine a day improves performance in repeated short bursts of high-intensity exercise.³

How much creatine per day

Both routes lead to the same stores. They only differ in speed.⁴ Loading is worth it if you want the effect quickly, for example before a season. Some people get an upset stomach on 20 g a day. If that is you, just stick with 3 to 5 g.

People with more muscle mass can lean toward the upper end, 5 g. Vegetarians and vegans tend to have lower natural stores, so they often respond more strongly to creatine.⁵

When to take creatine

Exact timing matters much less than the ads claim. Creatine does not work instantly like caffeine. It works through saturated stores that you build up over weeks. One study found slightly better results when it was taken after training,⁶ but the difference is small.

The practical rule: take it when you will remember it. Many people find it easiest to add it to breakfast or to a post-workout protein shake. Take it on rest days too, otherwise your stores slowly drop.

Which form of creatine to choose

Choose creatine monohydrate. It is the cheapest, and almost every study on effectiveness and safety was done with it.¹ Pricier forms like creatine HCl, ethyl ester or "buffered" creatine have no proven advantage. In some tests, ethyl ester actually performed worse.

Look for pure monohydrate on the label, ideally marked Creapure or carrying another quality certification. Unflavored powder is the cheapest and mixes into anything.

Is creatine safe?

In healthy people, yes. Doses of 3 to 5 g a day have been studied for years with no serious side effects.¹ A 2021 review of common myths reached these conclusions:⁵

• Kidneys: In healthy people, creatine does not damage the kidneys. It can slightly raise blood creatinine, which is a by-product of creatine, not a sign of damage. Tell your doctor you take it before a blood test.
• Hair loss: The concern comes from a single 2009 study in rugby players that saw a rise in the hormone DHT.⁷ No direct effect on hair was shown, and later studies did not replicate the DHT increase.
• Water retention: You gain 1 to 2 kg at first, but that water sits inside the muscles, not under the skin. Your muscles look fuller, not "puffy."
• Dehydration and cramps: Studies have not confirmed them, even during training in the heat.

How fast you will see results

With loading, you may feel the first difference after the first week. Without it, after 3 to 4 weeks. Most often you will notice that you can do one more rep per set, or that your last sets don't feel as hard.

About a quarter to a third of people respond weakly to creatine. They are usually people with naturally high stores, for example those who eat a lot of meat. If you see no change in your logs after 6 to 8 weeks, you may be one of them.

Do you need to cycle off?

No. There is no evidence that your body "gets used to" creatine or that breaks help. After you stop, your stores return to baseline in about 4 to 6 weeks, and the benefit goes with them. If you want to take it long term, take it continuously.