Creatine is one of those supplements almost everyone has heard of, but not everyone can explain. Is it a protein? A pre-workout? Something only bodybuilders need?

The short answer is much simpler: creatine is a substance your body already makes and uses to supply energy, particularly during short, intense efforts such as lifting a heavy weight or sprinting. You also get a smaller amount from foods including meat and fish. A creatine supplement increases the amount stored in your muscles, giving them a larger readily available energy reserve.

That does not mean a scoop of creatine will transform your training overnight. It is not a stimulant and you may not “feel” it working. Its value comes from taking it consistently and using the extra capacity to support better training over time.

This guide explains what creatine is, how it works, the benefits supported by evidence, how much to take and the common concerns worth knowing before you begin.

What is creatine?

Creatine is a naturally occurring compound made from three amino acids: arginine, glycine and methionine. Your body produces it mainly in the liver, kidneys and pancreas. Most of the creatine in your body is stored in skeletal muscle, with smaller amounts found in tissues including the brain.

Food contributes too. Red meat and fish are among the main dietary sources, while plant foods contain very little. This is one reason vegetarians and vegans often begin with lower muscle creatine stores, although individual levels vary.

Creatine is often grouped with amino-acid supplements, but it is not a protein. It is also not an anabolic steroid, hormone or stimulant. Its job is connected to energy availability inside your cells.

The creatine used in supplements is normally manufactured rather than extracted from meat. Many plain creatine products are therefore suitable for vegans, but it is still worth checking the product label and capsule ingredients. If that matters to you, browse our vegan creatine range.

How does creatine work?

To understand what creatine does, it helps to know about ATP—adenosine triphosphate. ATP is often described as the body’s energy currency. Your muscles use it whenever they contract, but they keep only a limited supply ready for immediate use.

Inside muscle, some creatine is stored as phosphocreatine. During a demanding effort, phosphocreatine can help replenish ATP quickly. Think of it as a small reserve that is particularly useful when energy demand rises sharply.

This system matters most during repeated bursts of high-intensity exercise: a hard set of squats, a short sprint, a jump or an explosive change of pace. It is less directly important during long, steady endurance work.

Supplementing with creatine gradually raises muscle creatine stores. For some people, that may mean an extra repetition, slightly better power across repeated sets or a better ability to maintain training quality. Each difference can be modest, but repeated over weeks and months it can contribute to meaningful progress.

The authorised European health claim is specific: a daily intake of 3g of creatine increases physical performance in successive bursts of short-term, high-intensity exercise in adults. That is a more accurate description than saying creatine simply “gives you energy” for everything.

What are the main creatine benefits?

Better performance during repeated high-intensity exercise

This is creatine’s best-established benefit. When training involves brief, forceful efforts with limited recovery between them, increased phosphocreatine availability may help you maintain output.

In practice, that could mean preserving power across sprint intervals or completing a little more quality work in the gym. Creatine does not replace a sensible training programme; it helps support the work the programme asks you to do.

Support for strength and muscle gain

Creatine is not a muscle-building ingredient in the same way dietary protein supplies amino acids. Instead, it can support the training stimulus that leads to strength and muscle gain. If you can perform more productive work and recover between repeated efforts, your training may become more effective.

Some early weight gain can also come from water being drawn into muscle cells. That is not the same as gaining body fat. Longer-term changes in lean mass depend on factors including training, diet, sleep and consistency.

Potential benefits beyond the gym

Researchers are studying creatine in areas including healthy ageing, cognition and situations where brain energy demand is high. The findings are interesting, but they are not all as settled as the evidence for repeated high-intensity exercise.

It is sensible to keep the claims in proportion: creatine is well established as a sports nutrition supplement, while many proposed brain and wider health benefits are still emerging and may depend on the person, dose and circumstances.

Why is creatine monohydrate the usual first choice?

Creatine comes in several forms, including monohydrate, hydrochloride (HCl), buffered creatine and various blends. Creatine monohydrate remains the standard starting point because it is the most extensively studied form and is usually the best value. Other forms may offer differences in serving size, flavour or mixability, but they have not consistently been shown to outperform monohydrate.

“Micronised” creatine monohydrate is the same type of creatine processed into smaller particles. This can help it disperse more easily in liquid, but it does not turn it into a different form.

For a straightforward place to start, compare our creatine monohydrate and micronised creatine collections.

How much creatine per day should you take?

For most healthy adults who choose to use it, 3–5g of creatine monohydrate per day is the common maintenance range. Check the serving instructions on the individual product because scoop sizes and concentrations differ.

The most important part is consistency. Creatine works by increasing tissue stores over time, not by creating a one-off boost immediately after you swallow it.

Do you need a creatine loading phase?

No. A loading phase is optional.

A common loading approach is around 20g daily, divided into four smaller servings, for five to seven days. This saturates the muscles faster, after which users move to a 3–5g daily maintenance dose. Larger servings are split because taking too much at once can upset the stomach.

You can skip loading and take 3–5g every day instead. It will take longer for muscle stores to rise, but the eventual outcome should be similar. For many beginners, the slower method is easier and avoids making the routine more complicated than it needs to be.

When should you take creatine?

There is no universally proven “best” time. Before training, after training and another convenient time of day can all work. Taking it every day matters more than timing it to the minute.

Choose a routine you will remember: with breakfast, in a post-workout shake or alongside another daily habit. On rest days, take your normal daily serving.

What can you mix creatine with?

Plain creatine monohydrate can be mixed with water, juice or a shake. It may not dissolve completely, especially in cold liquid, so stir or shake it and drink the whole serving. Warm liquid can improve dissolving, although there is no need to make this a special ritual.

Powder is popular because it is simple and cost-effective, but it is not the only option. If you dislike measuring powder, compare creatine capsules, creatine tablets or creatine gummies and chews. The best format is the one that supplies a clear dose and that you can take consistently.

Is creatine safe?

Creatine monohydrate has been studied extensively and is generally considered safe and well tolerated for healthy adults when used appropriately. A large 2025 analysis of clinical trials found no meaningful difference in the overall frequency of side effects between participants taking creatine and those receiving a placebo.

That reassurance still needs context. A supplement being well studied does not mean it is suitable for every person. Speak to a doctor or qualified healthcare professional before taking creatine if you have kidney or liver disease, are pregnant or breastfeeding, are under 18, take regular medication or are being investigated for a medical condition.

Creatine can also affect blood creatinine, a marker used when assessing kidney function. This does not automatically mean kidney damage, but you should tell the clinician interpreting your blood results that you take creatine.

Creatine side effects and common concerns

Water-weight gain

An increase on the scales is common, particularly during a loading phase. Creatine increases water held within muscle, so the change is not automatically fat gain. The amount varies from person to person.

Stomach discomfort

Some users experience bloating, loose stools or stomach discomfort, especially when taking large servings. Using a smaller daily dose, dividing a loading dose and taking it with enough fluid may help. Stop taking it and seek advice if symptoms persist.

Dehydration and cramps

The claim that creatine routinely causes dehydration or muscle cramps is not supported by the wider research in healthy users. You should still hydrate appropriately for your activity, environment and individual needs—just as you would without creatine.

Who may find creatine useful?

Creatine is most relevant to adults doing strength training, bodybuilding, sprint work, team sports or other activities built around repeated explosive efforts. It can also appeal to people who eat little or no meat or fish because their starting dietary intake may be lower.

It is not only for men or elite athletes. Women can use creatine, and the same basic mechanism applies. Product choice does not need to be gendered, although flavour, format and serving preference may differ. Our creatine for women collection brings suitable options into one place.

Creatine is less likely to make a noticeable difference if training is inconsistent or the activity is entirely low intensity. Supplements work best after the basics—appropriate training, sufficient food, protein, sleep and recovery—are in place.

How to choose your first creatine product

For most beginners, a plain creatine monohydrate with a clearly stated serving is the uncomplicated choice. When comparing products, look for:

• the amount of creatine supplied per daily serving;
• a complete ingredient list;
• clear allergen and dietary information;
• batch or third-party testing where relevant;
• a format and flavour you will actually use;
• cost per effective serving, not only the price of the tub.

There is no prize for buying the most elaborate formula. Start with the product that fits your needs and makes daily use easy. Browse our creatine for beginners collection or compare all creatine powders.

Frequently asked questions

What is creatine made from?

Your body makes creatine from the amino acids arginine, glycine and methionine. Supplemental creatine is generally manufactured through controlled processes rather than extracted from animal tissue. Always check the individual product if you require vegan or other dietary certification.

Does creatine make you gain weight?

It can increase body weight, particularly at the beginning, because more water is stored within muscle. Over time, creatine may also support gains in lean mass when combined with effective resistance training. It does not directly cause fat gain.

Is creatine a steroid?

No. Creatine is not an anabolic steroid, hormone or stimulant. It is a naturally occurring compound involved in the rapid supply of cellular energy.

Can you take creatine every day?

Daily use is the usual approach because the aim is to keep muscle creatine stores elevated. Follow the product directions and seek professional advice if you have a health condition or take medication.

Do you take creatine on rest days?

Yes. If you use creatine, take your normal daily serving on rest days too. Consistency matters more than whether you happen to train that day.

How long does creatine take to work?

Muscle stores rise faster with a loading phase, often over roughly a week. Without loading, a daily maintenance dose takes longer—commonly several weeks. You may not feel a sudden effect; look instead at training performance and progress over time.

The bottom line

So, what is creatine? It is a compound your body already uses to help regenerate energy during short, demanding efforts. Supplementing with creatine—particularly well-studied creatine monohydrate—can improve performance during repeated bursts of high-intensity exercise and can support the training that builds strength and muscle.

For most beginners, the practical approach is uncomplicated: choose a reputable creatine monohydrate, take 3–5g consistently each day and give it time. A loading phase is optional, exact timing is not crucial, and good training and nutrition still do the heavy lifting.

Ready to compare formats? Explore the full CreatineHQ creatine collection.

• International Society of Sports Nutrition position stand: safety and efficacy of creatine supplementation
• EFSA scientific opinion on creatine and physical performance
• Safety of creatine supplementation: analysis of adverse events in clinical trials (2025)
• Common questions and misconceptions about creatine supplementation