Creatine While Bulking: What It Is And How It Works

What creatine is

Creatine is a compound made from three amino acids — arginine, glycine and methionine. The body produces some of it, mainly in the liver and kidneys, and the rest comes from food. Red meat and fish are the richest dietary sources, though you would need to eat a great deal of either to match a standard supplement serve.

Roughly 95% of the body’s creatine is stored in skeletal muscle, where it exists largely as phosphocreatine.

How it works in the body

Muscle contraction is powered by adenosine triphosphate, or ATP. During short, high-intensity effort, ATP stores are depleted within seconds. Phosphocreatine donates a phosphate group to regenerate ATP, which is why creatine is associated with short, repeated, high-intensity efforts rather than endurance work.

That is the mechanism, and it is well understood physiology rather than a claim about any particular product.

Forms of creatine

Creatine monohydrate is the most studied form by a wide margin and the cheapest. Micronised monohydrate is the same compound ground finer so it suspends in liquid rather than sinking.

Creapure is a branded monohydrate manufactured in Germany under tight quality control. It is monohydrate — the difference is the manufacturing standard, not the molecule.

Creatine hydrochloride is more soluble, which allows a smaller serving size. Some people find it sits better than monohydrate.

Buffered and blended forms adjust pH or combine several creatine types. They cost more than monohydrate.

Loading and maintenance

Two common approaches appear in the research literature. A loading protocol uses around 20 grams a day split into four doses for five to seven days, then drops to a maintenance dose. The alternative skips loading and takes a maintenance dose from the start, reaching the same muscle saturation over a longer period.

A typical maintenance serve is 3 to 5 grams a day. Timing appears to matter less than consistency.

Water retention

Creatine draws water into muscle cells. Some people notice a small increase in body weight in the first weeks, which is intracellular water rather than fat. It is worth knowing about if you weigh yourself regularly, and it is the most common reason people think creatine is not working for them.

Keep fluid intake up while using creatine.

Choosing a product

Creatine is one of the few supplements where the cheap option and the premium option contain the same active compound. What separates products is purity, manufacturing standard, whether it is micronised, and whether it has been independently tested for banned substances.

If you compete in a tested sport, look for HASTA or Informed Sport certification.

If you have a medical condition, are pregnant or breastfeeding, or take prescription medication, speak to your doctor or pharmacist before starting creatine.