Creatine for men: what it does, how much to take, and the myths

Most of the supplement aisle is marketing. Creatine is the exception, and it is also the cheapest thing on the shelf. Five grams a day of creatine monohydrate, taken consistently, is the whole protocol.

What it does is narrower than the packaging suggests. It will not raise your testosterone, burn fat or replace training. It makes hard efforts slightly easier to repeat, and over months that turns into more strength and more muscle than you would have got otherwise.

What creatine does

Your muscles store creatine as phosphocreatine, the fuel they use to regenerate energy during short, hard efforts: a heavy set, a sprint, the last two reps that decide whether a session was productive.

Supplementing raises those stores above what food provides. The position stand from the International Society of Sports Nutrition describes creatine monohydrate as the most extensively studied and clinically effective form for muscle uptake and for increasing high-intensity exercise capacity (JISSN, 2017).

The mechanism matters because it tells you what to expect. Creatine does not build muscle. It lets you train slightly harder, and the training builds the muscle.

What to expect from it

The clearest numbers come from older adults, which is also where the effect matters most. A meta-analysis of 22 studies and 721 participants, average age 57 to 70, all doing resistance training two to three days a week, found that adding creatine produced about 1.37 kg more lean tissue than training alone, plus greater gains in limb strength (Open Access J Sports Med, 2017).

Read that carefully: the comparison is creatine plus training against training alone. Both groups trained. The supplement added roughly a kilo and a half of lean mass on top of the work.

For a man in his 40s or 50s watching strength drift down, that is a meaningful return from something that costs a few pounds a month. It sits alongside, not instead of, the training and protein described in our guides to muscle loss with age and how much protein men need.

How much to take

Route	Protocol	Full stores in
Straight to the daily dose	3–5 g a day, every day	3 to 4 weeks
Load first	About 0.3 g per kg of body weight a day for 5–7 days, then 3–5 g	About a week

Both routes end in the same place. The position stand is specific about the arithmetic. Loading means roughly 0.3 g/kg a day for five to seven days, followed by 3 to 5 g a day to maintain them (JISSN, 2017). For an 85 kg man that is about 25 g a day during the loading week, best split into four smaller doses to avoid stomach upset. Our creatine dose calculator does the arithmetic.

Three practical points:

• Take it every day, including rest days. You are keeping a store topped up, not timing a stimulant.
• Buy monohydrate. The buffered, liquid and hydrochloride versions cost more and have no proven advantage over the form the research was done on.
• Skip the cycling. There is no washout requirement. Stop and your stores simply drift back down over a few weeks.

Creatine after 50, where the evidence is strongest

Most creatine research was done on young men in a gym. The exception is the work on older adults, and it is the part worth knowing if you are watching muscle leave rather than trying to add it. Four pooled analyses, all of creatine taken alongside resistance training rather than instead of it:

Outcome	What the pooled evidence shows	Evidence base
Lean tissue mass	+1.37 kg over training alone (95% CI 0.97 to 1.76)	22 trials, 721 people, mean ages 57 to 70, training 2 to 3 days a week for 7 to 52 weeks
Upper-body strength	Chest press improved, standardized mean difference 0.35 (0.16 to 0.53)	Same 22 trials
Lower-body strength	Leg press improved, SMD 0.24 (0.05 to 0.43); a 2025 analysis puts one-rep max at +2.1 kg	Same 22 trials; 20 trials, 1,093 people
Body fat	Fat percentage down by about half a point	20 trials, 1,093 people
Bone density	No effect on total-body bone mineral density	20 trials, 1,093 people
Isolated smaller muscles	No greater gain in knee extension or biceps curl	357 older adults, average age 64

Sources in order: Open Access J Sports Med, 2017, Eur Rev Aging Phys Act, 2025 and MSSE, 2014.

Two things that table does not say. The gains attach to compound lifts, chest press and leg press, rather than to every muscle measured, and nothing here supports creatine without the training. The 2025 pooled group was 69% women, so the body-composition figures are not a men-only result.

Does the loading phase matter after 50?

It may matter more here than it does in a 25-year-old. A 2021 meta-analysis of ingestion strategies found that creatine improved lean mass and strength overall, and then found something inconvenient: once trials that used a loading phase were removed, creatine no longer beat placebo on chest press or leg press strength (Nutrients, 2021). Loading followed by 5 g a day or less improved chest press; more than 5 g a day, with or without loading, improved leg press. Taking it only on training days still worked.

That is a subgroup finding inside a heterogeneous literature, not a rule. Read it as a reason to load first if you are over 50 and starting creatine to protect muscle, rather than as proof that the daily route fails.

Our guide to muscle loss with age covers how fast that loss runs and what else moves it.

The hair loss question, answered properly

This is the reason a lot of men avoid creatine, so it is worth tracing where the claim came from.

In 2009, a study of 20 college rugby players found that three weeks of creatine raised dihydrotestosterone, the hormone involved in male pattern baldness (Clin J Sport Med, 2009). That study never measured hair. Not density, not shedding, not follicles. It measured a hormone and the internet supplied the rest.

Sixteen years later somebody measured the actual outcome. A randomized controlled trial put 45 resistance-trained men aged 18 to 40 on 5 g of creatine or placebo for 12 weeks and assessed hair density, follicular unit counts and cumulative hair thickness, alongside testosterone and DHT. The groups did not differ in DHT, in the DHT-to-testosterone ratio, or in any hair measure (JISSN, 2025).

That is as close to a direct answer as supplement research gets: the outcome everybody worried about was measured, and it did not happen.

The other two worries

Kidneys. The position stand states there is no compelling scientific evidence that short or long-term creatine use, at up to 30 g a day for five years, has detrimental effects in otherwise healthy people, and specifically no compelling evidence of harm to renal function (JISSN, 2017). One caveat that trips people up: creatine raises blood creatinine slightly, which can make a routine kidney test look off. Tell whoever ordered the test that you take it.

Cramps and dehydration. The opposite of the folklore. The evidence reviewed by the same group found creatine does not increase dehydration or muscle cramping, and users reported fewer of these problems than non-users. The broader set of common objections is worked through in a dedicated review of creatine misconceptions (JISSN, 2021).

What is real is water. Expect one to two kg on the scale in the first weeks, held inside the muscle rather than under the skin; how much water to drink on creatine covers where it goes and why it does not raise what you need to drink. If you are weighing yourself to track fat loss, start creatine after you have a baseline, not during.

What creatine will not do

• Raise testosterone. It has no meaningful effect on it, which the 2025 trial confirmed again.
• Burn fat. It supports training; the deficit does the fat loss.
• Work without training. Taken by a man who does not train, it fills a store nothing is drawing on.

It is worth saying what this comparison shows. Creatine is what an evidence-backed supplement looks like: a clear mechanism, dozens of human trials, a known dose, an honest error bar. Hold the products in our guide to testosterone boosters to that standard and almost none of them qualify.

When to check with a doctor first

Ask before starting if you have kidney disease or reduced kidney function, if you take medication that affects the kidneys, or if you are managing a health condition where fluid balance matters. Otherwise, for a healthy man who trains, this is one of the few supplements where the honest answer is simply: yes, it works, take 5 g.

Frequently asked questions

How much creatine should I take a day?

3 to 5 g of creatine monohydrate daily, every day, training or not. If you want full muscle stores inside a week rather than a month, take about 0.3 g per kg of body weight daily for 5 to 7 days first, then drop to 3 to 5 g.

Does creatine cause hair loss?

The evidence says no. The claim traces to one 2009 study in 20 rugby players that measured a rise in DHT but never measured hair. A 2025 randomized trial in 45 resistance-trained men measured hair density and follicle counts directly over 12 weeks and found no difference between creatine and placebo.

Is creatine bad for your kidneys?

Not in healthy people. The International Society of Sports Nutrition states there is no compelling evidence that creatine, at up to 30 g a day for five years, harms kidney function in healthy or clinical populations. Existing kidney disease is a different situation and needs medical advice.

Do I need to cycle creatine or take it at a specific time?

No cycling is needed; the point is keeping muscle stores full, so you take it daily and indefinitely. Timing is a minor detail compared with taking it consistently.

Does creatine cause cramps or dehydration?

No. The evidence reviewed by the International Society of Sports Nutrition found that creatine does not increase dehydration or muscle cramping, and users reported fewer of these problems than non-users.

References

1. International Society of Sports Nutrition position stand: safety and efficacy of creatine supplementation in exercise, sport, and medicine · Journal of the International Society of Sports Nutrition, 2017
2. Effect of creatine supplementation during resistance training on lean tissue mass and muscular strength in older adults: a meta-analysis · Open Access Journal of Sports Medicine, 2017
3. Creatine supplementation during resistance training in older adults: a meta-analysis · Medicine and Science in Sports and Exercise, 2014
4. Meta-Analysis Examining the Importance of Creatine Ingestion Strategies on Lean Tissue Mass and Strength in Older Adults · Nutrients, 2021
5. Impact of creatine supplementation and exercise training in older adults: a systematic review and meta-analysis · European Review of Aging and Physical Activity, 2025
6. Does creatine cause hair loss? A 12-week randomized controlled trial · Journal of the International Society of Sports Nutrition, 2025
7. Three weeks of creatine monohydrate supplementation affects dihydrotestosterone to testosterone ratio in college-aged rugby players · Clinical Journal of Sport Medicine, 2009
8. Common questions and misconceptions about creatine supplementation: what does the scientific evidence really show? · Journal of the International Society of Sports Nutrition, 2021