The Creatine Guide
Everything you need to know before and after you take creatine.
Creatine is one of the few supplements that really works, but it works through your training, a rep or two at a time. Take 3 to 5 g of plain creatine monohydrate every day, rest days too, and skip loading unless you need it working within a week, since loading gets you to the same place about three weeks sooner and puts 1 to 3 kg of water on the scale. Most people judge it by the scale or by how they feel, and both mislead, so test one lift or benchmark before your first scoop and again at week eight.
Updated November 15, 2026. 20 guide pages, 29 questions, 9 myths, from 115 published sources.
How much creatine should I take?
Your dose, the day your stores are full on each path, and what the scale will do. Drag your weight, flip loading on, and watch the two curves race.
Two quick checks first
The dose by weight, as a table
| Your weight | Every day | Loading (6 days) | Each of 4 servings | Full by, loading | Full by, 3 to 5 g |
|---|---|---|---|---|---|
| 120 lb (54 kg) | 3 to 5 g | 16 g | 4 g | day 6 | day 28 |
| 140 lb (64 kg) | 3 to 5 g | 19 g | 5 g | day 6 | day 28 |
| 160 lb (73 kg) | 3 to 5 g | 22 g | 5.5 g | day 6 | day 28 |
| 180 lb (82 kg) | 3 to 5 g | 24 g | 6 g | day 6 | day 28 |
| 200 lb (91 kg) | 3 to 5 g | 25 g (the cap) | 6 g | day 6 | day 28 |
| 220 lb (100 kg) and up | 3 to 5 g, up to 10 g for big athletes in hard training | 25 g (the cap) | 6 g | day 6 | day 28 |
Why are you taking creatine?
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From food firstMeat and fish, sized honestly against a scoop. -
For muscleThe studies, the pathway, and a 12-week plan. -
Vegetarian or veganThe most improved, and the powder is vegan. -
For the brainSleep loss, memory and aging, and what failed to replicate. -
For womenThe same scoop, and what it does after menopause. -
After 50Where the lean tissue gains are biggest. -
High dosesWhat 10, 20 and 30 g a day have done in studies. -
Worried about hairThe 2009 study, the 2025 trial, and what to do. -
Heat and storageWhen creatine breaks down, and the drinks that speed it up. -
Teens and the lawThe science, New York's law and California's new one.
The questions people ask
Dose and timing
- Do you need to load creatine?No. 20 g a day for 6 days and 3 g a day for 28 days reached the same muscle level. Loading buys you about three weeks and more water on the scale.
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How long does creatine take to work?Your muscles are full in about 6 days if you load and about 4 weeks on 3 to 5 g a day. The extra rep on hard sets shows up once they're full. - How much creatine should I take?3 to 5 g of creatine monohydrate a day, rest days too. Loading at 0.3 g per kg for 6 days is optional and only gets your muscles full about three weeks sooner.
- Is 10 grams of creatine too much?Not for most adults, but split it. One 10 g dose gave 56% of players diarrhea, against 29% on two 5 g doses and 35% on placebo.
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Should I take creatine on rest days?Yes, the same dose. About 1 to 2% of the creatine in your muscles breaks down every day, trained or not, so the top-up has to be daily too. -
What happens when you stop taking creatine?Your stores drift back to where they started over about a month, the water goes with them, and they never drop below your starting level. -
When should I take creatine?Whenever you'll remember. A small trial leaned toward after training, but the daily total is what fills your muscles, so take it with a meal you never skip.
The scale and your body
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Can you take creatine while cutting?Yes. Skip loading, keep 3 to 5 g a day, and expect the water to hide two to four weeks of fat loss on the scale. Watch your waist and weekly average instead. -
Does creatine make you bloated?Usually it's your stomach reacting to a big dose. In one trial two 5 g doses a day were no worse than placebo, while one 10 g dose nearly doubled the diarrhea. -
Does creatine make you fat?No. Trials lasting from one week to two years found no gain in fat. The weight you see at first is water, and calories are what decide fat. - Does creatine make you gain weight?Yes, mostly water at first: 2 to 7 lb (1 to 3 kg) in a loading week, less and slower on 3 to 5 g a day. It stops once your muscles are full.
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Does creatine work without exercise?Barely. Across 35 trials lean mass didn't move without exercise. One 2026 trial found about 2 lb (1 kg) at 10 g a day in 13 people, on a scan that counts water.
Safety
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Can you take creatine while pregnant?There isn't enough research in pregnancy or breastfeeding to give a dose. Ask your doctor or midwife before you take it. -
Does creatine cause cramps?No. Over a season of college football in the heat, players on creatine had fewer cramps, heat illness and muscle strains than players not taking it. -
Does creatine cause hair loss?No good evidence. One 2009 study saw a hormone (DHT) rise and never looked at hair. A 2025 trial measured hair and found no difference. - Is creatine bad for your kidneys?Not in healthy people. It raises creatinine about 0.14 mg/dL, so the kidney score looks lower, but kidney filtering measured directly didn't drop.
- Is creatine safe?For healthy adults at 3 to 5 g a day, yes. Water weight and a higher creatinine number are the real effects, and big single doses can upset your stomach.
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Should I stop creatine before a blood test?Tell your doctor instead. Your stores take about a month to fall, so a few days off probably won't clear the creatinine rise, and no study has timed it. - Why did my creatinine go up on creatine?Creatine breaks down into creatinine, so fuller muscles put more in your blood, about 0.13 to 0.14 mg/dL on average. Ask your doctor about a cystatin C test.
Who it's for
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Do vegetarians get more from creatine?For muscle, probably. Vegetarians start lower, so the same dose fills more. For the brain, a 123-person trial found no extra benefit for vegetarians. -
Is creatine good after 50?With lifting, yes. Across 22 trials of people in their late 50s to 70, creatine added about 3 lb (1.37 kg) more lean tissue and more strength. - Should women take creatine?Yes, at the same 3 to 5 g, with lifting. After menopause, leg press rose about 16 lb (7.5 kg) more with creatine. Bone density didn't change.
- Should you take creatine on a GLP-1?Maybe, but lifting and protein come first. No trial has tested creatine in people taking semaglutide or tirzepatide yet.
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Does creatine make you stronger?Yes, with lifting: a rep or two more on hard sets. strength.guide has the whole answer.
Brain and mood
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Can creatine help depression?Maybe a little. Across 11 trials it moved depression scores 2.2 points, below the 3 points people notice, and the evidence is weak. Never change a medicine for it. - Does creatine help the brain?A little. Across 16 trials, memory and processing speed improved slightly, and overall thinking and planning didn't change.
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Does creatine help when you haven't slept?In one trial of 15 people, a single large dose (0.35 g per kg) held up thinking speed through a night without sleep. That's a trial dose, and sleep is the fix.
Buying and mixing
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Can you mix creatine with coffee?Yes. The first creatine trials dissolved it in hot tea. Drink it soon after mixing, since creatine slowly breaks down in warm liquid. -
Do creatine gummies work?They can, if each one holds what the label says. A 2026 trial with checked 5 g gummies worked, but gummy content varies a lot, so look for a test mark. - Is creatine HCl better than monohydrate?No. In two trials HCl did no better than monohydrate, and monohydrate is already 87.9% creatine and almost fully absorbed. Buy plain monohydrate.
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How much protein do I need with creatine?Your daily range in grams, from your weight and goal, on protein.guide.
Six facts you can check
20%either way
20 g a day for 6 days and 3 g a day for 28 days raised muscle creatine by about the same 20%. Loading only gets you there about three weeks sooner.
1 to 3 kgin a loading week
A loading week of about 20 g a day typically puts 1 to 3 kg (2 to 7 lb) on the scale, mostly water that travels into muscle with the creatine.
87.9%creatine by weight
Plain creatine monohydrate is 87.9% creatine, the highest of any form except anhydrous, so a 5 g scoop carries about 4.4 g.
2.4 lbof raw steak
A 5 g scoop holds the creatine in about 1.1 kg (2.4 lb) of raw steak. Cooking leaves less.
0.14mg/dL of creatinine
Across 26 trials, creatine raised creatinine, the number a kidney test uses, by about 0.14 mg/dL. Kidney filtering measured directly didn't drop.
12 weeksof hair, measured
A 2025 trial gave men who lift 5 g a day or a placebo for 12 weeks, measured their hair, and found no difference. The 2009 study behind the fear never looked at hair.
Myth or fact?
Quick tools
How much creatine?
Your dose, the loading option, both fill curves and the day your stores are full.
What the scale will do
The usual creatine water by day, the date it levels off, and your weigh-in against it.
Prove it worked
Push-ups, dead hang or plank on day one and at week eight. Is the change bigger than your noise?
Creatinine check
Why your creatinine may be up, how much creatine adds, and the test to ask for.
The cost of a real 5 g day
Powder, capsules or gummies: the cost per day and per year, and how many make 5 g.
Will creatine work for me?
The quiz: eight taps, your verdict, your dose, your dates and the one test that tells you.
The guide
Creatine benefits: how it works and who it helps most
Creatine works through your training, at 3 to 5 g of monohydrate a day. Close to essential if you eat little meat, and a cheap, safe top-up for nearly everyone else.
How creatine works
Foods high in creatine: how far meat and fish get you
Creatine for muscle: the studies, the pathway and the plan
Creatine for the brain: what the studies show
High-dose creatine: how much is too much?
Creatine side effects: which are real, and your kidney test
Creatine and hair loss: the pros, the cons and what to do
Creatine and heat: when it breaks down, and how to store it
Creatine and the law: under-18 sales in New York, California and other states- Can teens take creatine? What pediatricians and the research say
