Supplements

Creatine

3.2

Creatine: The most studied supplement is the one women skip.

5 sections, about 6 minutes in total

100s

Hundreds of studies across decades sit behind the ISSN's position stand.

3–5 g

The research protocols use 3 to 5 grams of monohydrate per day.

Not

Creatine is not a steroid, a hormone, or a men's-only product. It is a compound your body already makes.

Section 1 of 5:

Clearing up the myths

Why women skip it.

Three beliefs keep women away from creatine. None of them hold up in the research.

The reputationIt'll make me bulky.
What the research showsCreatine only helps you do slightly more quality work per training session. Any muscle you gain still comes from the training itself, and women build muscle far more slowly than the word “bulky” suggests.
The reputationIt's basically a steroid.
What the research showsIt is not related to steroids at all. It is a compound your body already makes and your food already contains, and supplementing does not change your hormones.
The reputationIt causes bloating and damages your kidneys.
What the research showsIn healthy people, long-term use shows no kidney harm in the research. The 1–2 lb of early weight gain is water stored inside the muscle. It is not fat, and it is not bloating.

The kidney caution applies to people who already have kidney disease. If that is you, check first. The section below covers it. The research does not show this risk in healthy users.

Section 2 of 5:

What the evidence says

What creatine can and cannot do.

Strength gains are well supported. The kidney and bulking claims are not supported. The brain claim is early research.

The claimIt will make me stronger.
What the evidence saysHolds up. Decades of trials show that creatine plus hard training adds measurable strength, power and lean mass. It is the best-evidenced supplement in sports nutrition.
The claimCreatine will make me bulky.
What the evidence saysNo. The early scale change is water stored inside the muscle. Muscle still has to be built through training. No trial has shown a small daily dose making a woman bulky.
The claimIt damages your kidneys.
What the evidence saysNo, in healthy people. Long-term trials have not found kidney harm. Creatine raises a lab marker called creatinine, which can look like a kidney problem on paper. Existing kidney disease is different. That needs a medical decision first.
The claimIt sharpens your brain.
What the evidence saysNot yet. A 2024 meta-analysis found small, inconsistent gains in memory, mostly in people who were stressed or short on sleep. The research is early. It is not a reason to buy creatine.

These summaries reflect the cited research and will change if the research changes. This is coaching context, not a prescription.

Section 3 of 5:

How it works

It adds a rep or two per set.

Creatine speeds up how fast your muscles refill their quick energy between efforts.

Tap a step to open it. Each one carries the detail.

The brain research is early

Newer research explores creatine and cognition. It is interesting and it is early, but it is not the reason to buy creatine. The strength evidence is the well-supported part. Treat everything else as a possible bonus.

Section 4 of 5:

How much to take

The studied dose is small and simple.

3–5 g a day of plain monohydrate is the studied dose. Drag to see what the research says at other amounts.

Drag to a daily dose.

0g

01163120 g
Drag to a dose.

Every stop shows what the research says at that dose.

Doses are research reference values from the ISSN position stand, not a prescription. Many people see roughly 1–2 lb of early weight gain on the scale. That is water stored inside the muscle, which is part of how creatine works. It is not fat, and it is not a reason to quit in the first week.

Section 5 of 5:

The exceptions

Who should check first.

Creatine's safety record comes from studies of healthy adults. These groups were rarely included.

  • If you have a kidney condition, or take medication that affects your kidneys, ask your doctor first. The long-term safety studies were done on healthy people.

  • If you are pregnant or breastfeeding, check first. There is little research on creatine in pregnancy.

  • If you are under 18, check first with a qualified coach. The studies in young athletes had adult supervision.

  • Choose a product with an NSF or Informed Sport seal. Creatine is cheap, and tested products cost about the same.

Drink water as normal. Take it daily. Judge results over months of training, not days.

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