Creatine

Creatine is the rare supplement that keeps winning after decades of testing. If you want more strength, more lean mass, and better bounce-back from hard training, it sits near the top of the evidence stack.¹²³

82 papers 86 claims 177 outcomes

Improve everyday quality of life Reduce oxidative cell damage Build stronger muscles Raise peak oxygen capacity Reduce oxidative damage to your DNA Recover faster after exercise

Creatine is a small compound your body makes from amino acids, and you also get some from meat and fish. Most of it lives in muscle, with a smaller but important share in the brain. The form with the real mountain of trial data is creatine monohydrate.¹

Think of creatine as the spare battery pack your cells keep clipped to their belt: it stores fast backup energy as phosphocreatine, then hands that energy back to rebuild ATP, the fuel your muscles and brain burn first when effort spikes.¹ That bigger energy buffer helps you squeeze out more high-quality work before fatigue drags performance down, which explains why the clearest real-world wins show up in strength and muscle gain, while memory and focus gains stay smaller and less consistent.¹²³⁴ It also draws more water into muscle cells, like topping off the air in a tire before a hard ride, which supports a more growth-ready training environment.¹

Dosing

How to take creatine

Range

Across the creatine trials here, the repeat-player protocols cluster around 3-5 g/day of creatine monohydrate, or a loading phase of 20 g/day split into 4 doses for 5-7 days followed by 3-5 g/day. Weight-based studies also commonly use about 0.03 g/kg/day for maintenance, with short loading phases around 0.3 g/kg/day.¹²³

Timing

Take it every day. Creatine works by filling the tank over days and weeks, not by landing a one-dose punch, so the best timing is the one you will actually repeat; if you load, split the larger dose into smaller servings across the day, ideally with meals or snacks, to make it easier on your stomach.¹ Taking it with carbohydrate or a mixed meal can improve muscle uptake.¹

Form

Creatine monohydrate is the default choice because almost all the solid human data uses it. Micronized monohydrate can mix better, but the evidence does not show fancy forms consistently outperforming plain monohydrate in real outcomes.¹

What works

7 claims with strong evidence

Proven strong benefit

Improve everyday quality of life

Fewer days where health problems dictate what you can and cannot do. ^{18608103,25668262,39683542 +2}

5-10000 mg 1-260 weeks 5 studies 968 people

Ranks #4 of 45 supplements

Likely strong benefit

Reduce oxidative cell damage

Less oxidative damage to your cell membranes, proteins, and DNA. ^{20716911,27217925,35218552 +1}

5-20000 g 1-4 weeks 4 studies 509 people

Ranks #3 of 50 supplements

Proven benefit

Build stronger muscles

Higher one-rep max, stronger grip, and more force from every muscle group. ^{18044100,19242554,26439785 +22}

0.03-20000 g 1-52 weeks 25 studies 1.5k people

Ranks #3 of 45 supplements

Proven benefit

Raise peak oxygen capacity

Higher aerobic ceiling gives more headroom at race pace. ^{19909536,34859731}

10 g 4-6 weeks 2 studies 457 people

Ranks #2 of 35 supplements

Proven benefit

Reduce oxidative damage to your DNA

Less daily wear on your genetic material inside each cell. ^{24510496,28701493}

5-40 g 26-52 weeks 2 studies 46 people

Ranks #1 of 11 supplements

Proven benefit

Recover faster after exercise

Less soreness, less inflammation, and quicker return to form after hard training. ^{33631721,35218552,40507040 +4}

0.07-300 g 0-8 weeks 7 studies 847 people

Ranks #3 of 42 supplements

Proven benefit

Build and keep muscle

More muscle tissue, better body composition, and size that reflects the work you put in. ^{19242554,24576864,28054322 +21}

0.3-20000 g 1-52 weeks 24 studies 1.6k people

Ranks #1 of 27 supplements

More findings

Smaller effects and promising leads

Sharpen focus and mental stamina Proven modest benefit

Concentrate longer, resist distraction, and stay mentally sharp through demanding tasks. ^{39070254,21118604 +7}

9 studies 0-20 g

Jump higher and react faster Proven modest benefit

More explosive takeoff force and quicker ground contact. ^{28901216,30400221 +3}

5 studies 2-35 g

Remember more and forget less Likely modest benefit

Names, conversations, and details stay retrievable instead of dissolving. ^{40971619,21118604 +3}

5 studies 0-20 g

Lose weight on the scale Proven but unnoticeable

Less weight on your joints, better blood markers, easier movement. ^{18044100,26907087 +8}

10 studies 0.07-10000 g

Boost sprint speed and peak power Proven but unnoticeable

More watts and faster times in short all-out efforts. ^{26439785,30400221 +13}

15 studies 0.03-300 mg/kg/day

Last longer before giving out Proven but unnoticeable

More reps, more miles, and a higher ceiling before fatigue forces you to stop. ^{19909536,34859731 +12}

14 studies 0.03-300 g

Lose body fat Proven but unnoticeable

Body fat percentage drops and the mirror shows it before the scale does. ^{24576864,30400221 +9}

11 studies 1-100 g

Hold power across repeated sprints Proven but unnoticeable

Burst speed and power fade less as efforts stack up. ^{25505854,39441446 +3}

5 studies 20-20000 g

Sharpen reasoning and problem solving Likely real but unnoticeable

See patterns faster and solve logic problems with less effort. ^{14561278,29704637 +2}

4 studies 0.35-20 g

17 promising leads — reduce everyday fatigue, lower your resting heart rate, recover from jet lag faster, boost circulation to hands and brain, and 13 more

Reduce everyday fatigue — Less of that heavy, worn-out feeling that makes simple tasks feel like a chore. ^{18053002,38418482 +1}

3 studies · 30 people

Lower your resting heart rate — Each beat pushes more blood, so your heart needs fewer beats per minute. ^{39441446,41579075}

2 studies · 120 people

Recover from jet lag faster — Gets your internal clock back on local time so you lose fewer days. ^41470776

1 studies · 28 people

Boost circulation to hands and brain — More blood reaches your fingers, toes, and brain through the tiniest vessels. ^39796490

1 studies · 24 people

Speed recovery between sessions — Testosterone rises relative to cortisol, signaling your body is rebuilding not breaking down. ^39545789

1 studies · 20 people

Reduce falls in older adults — Stronger legs and steadier balance keep you upright on uneven ground. ^{30820517,41375841}

2 studies · 62 people

Ease the burden of dementia caregiving — Less energy spent managing resistance, more spent on real connection. ^41375841

1 studies · 40 people

Reduce the emotional weight of pain — Pain feels less overwhelming and occupies less headspace. ^41375841

1 studies · 40 people

Lower triglycerides — Reduces the blood fats that rise after meals and drive heart risk. ^{19242554,39796490}

2 studies · 57 people

Speed up thinking and reactions — Shortens the gap between seeing a question and having the answer. ^{21118604,25668262 +4}

6 studies · 1.3k people

Ease winter depression symptoms — Compensates for the sunlight deficit when days get short. ^{22864465,24098469 +1}

3 studies · 89 people

Ease depression tied to chronic pain — When pain loosens its grip, mood follows. ^{22864465,24098469 +1}

3 studies · 89 people

Reduce everyday pain intensity — Lower intensity, fewer flares, and longer stretches of relief. ^{41375841,38684388}

2 studies · 40 people

Ease depression symptoms — Lowers the weight of sadness, low energy, and emotional numbness over weeks. ^{22864465,24098469 +2}

4 studies · 753 people

Build explosive fuel reserves in muscle — Your muscles stockpile more of the compounds that power sprints and heavy lifts. ^{25505854,27034623 +3}

5 studies · 86 people

Ease inflammation tied to metabolism — Fat tissue produces fewer inflammatory signals and more protective ones. ^39683542

1 studies · 30 people

Ease arthritis pain and joint inflammation — Less pain, less stiffness, quieter inflammatory signals inside the joint. ^41375841

1 studies · 40 people

52 early-stage findings — steady your blood sugar levels, speed muscle repair after training, fall asleep faster, boost overall cognitive performance, and 48 more

Steady your blood sugar levels — Keeps fasting glucose and your three-month average in a healthier range. ^39796490

1 study

Speed muscle repair after training — Your body releases more repair hormones after hard exercise. ^{39545789 +1}

2 studies

Fall asleep faster — Shrinks the gap between hitting the pillow and actually sleeping. ^41470776

1 study

Boost overall cognitive performance — Broad gains in memory, speed, and mental sharpness at once. ^{25632150 +4}

5 studies

Speed up hair growth — Hair lengthens faster from the root, with early regrowth in thinning spots. ^40265319

1 study

Lower low-grade inflammation — Brings down C-reactive protein, a blood marker your doctor tracks. ^{33631721 +1}

2 studies

Strengthen oral antioxidant defense — Raises antioxidant levels in your saliva to protect gums and cheeks. ^27217925

1 study

Flatten post-meal blood sugar spikes — Blunts the glucose surge after eating so energy stays level. ^20716911

1 study

Ease cold and flu severity — When you do get sick, the whole experience hits lighter. ^38684388

1 study

Ease headache and migraine pain — Dials down how intense each headache feels when it hits. ^38684388

1 study

Get fewer headaches and migraines — Cuts the number of attacks per month so headache days stop piling up. ^18053002

1 study

Reduce migraine disruption — Headaches steal fewer workdays, social plans, and hours of patience. ^18053002

1 study

Raise antioxidant vitamin levels — Vitamin C and E blood levels climb into protective territory. ^20716911

1 study

Reduce daily stress — Everyday pressure stops running your nervous system hot. ^{38606895 +1}

2 studies

Build glutathione antioxidant levels — Your cells' main internal antioxidant defense gets deeper reserves. ^27217925

1 study

Lift mood and reduce negativity — Fewer dark stretches and more spontaneous positive moments through the day. ^41470776

1 study

Lower multiple inflammation markers — Several inflammation blood markers drop together, not just one in isolation. ^41798953

1 study

Lower TNF-alpha inflammation — Reduces one of the immune system's strongest pro-inflammatory signals. ^39683542

1 study

Improve insulin sensitivity — Your cells respond to insulin again so your pancreas works less hard. ^19242554

1 study

Boost testosterone levels — Raises total or free testosterone, especially when baseline runs low. ^{21324203 +2}

3 studies

Stay cooler longer during exercise — Better sweat regulation keeps you performing before heat forces a slowdown. ^{19295968 +1}

2 studies

Stay asleep through the night — Fewer wake-ups and more unbroken hours of real rest. ^41470776

1 study

Breathe more efficiently during exercise — Your lungs move air more efficiently so oxygen keeps up with effort. ^18044100

1 study

Protect cholesterol from oxidation — Keeps blood fats from becoming the oxidized particles that damage arteries. ^39796490

1 study

Strengthen planning and mental control — Organize priorities, switch tasks, and catch mistakes more easily. ^{39070254 +3}

4 studies

Speed up mental arithmetic — Calculate faster and hold accuracy when numbers pile up. ^40758095

1 study

Raise protective carotenoid levels — Plant pigments reach your bloodstream and protect cells from oxidation. ^20716911

1 study

Reduce daily hair shedding — Fewer hairs on the pillow, in the brush, and down the drain. ^40265319

1 study

Ease dizziness and vertigo episodes — Less spinning, swaying, and lightheadedness from inner-ear misfiring. ^18053002

1 study

Lower elevated liver enzymes — Brings down blood markers that spike when liver cells are damaged. ^32549301

1 study

Lower arsenic levels in the blood — Speeds clearance of this toxic metal from your circulation. ^25978852

1 study

Improve lung function in airway disease — Breathe out more air, more quickly, through more open airways. ^{18044100 +2}

3 studies

Increase antioxidant defenses — Your blood neutralizes oxidants faster, before they damage cells. ^27217925

1 study

Move more easily with aging — Stand, walk, turn, and handle stairs with less effort and more confidence. ^{33466233 +7}

8 studies

Grow thicker, fuller hair — More hairs per area, wider strands, and less visible thinning. ^40265319

1 study

Lower the hormone behind hair thinning — Slows the follicle-shrinking process so hair stays thicker longer. ^40265319

1 study

Buffer the burn during hard efforts — Acid builds up slower in muscles during intense exercise. ^{39441446 +3}

4 studies

Slow cognitive decline in dementia — Memory, attention, and orientation hold up longer before fading. ^24098469

1 study

Lower the internal cost of exercise — Same effort feels easier as your body works more efficiently. ^39441446

1 study

Sharpen accuracy and agility in sport — Execute skills more precisely when fatigue and pressure mount. ^{21324203 +2}

3 studies

Calm inflamed airways in asthma — Quiets the swelling and immune overactivity inside the breathing tubes. ^30913162

1 study

Ease depression in young people — Lifts the withdrawal and irritability before they settle into a lasting pattern. ^26907087

1 study

Improve kidney filtration rate — Your kidneys clear waste from the blood more effectively. ^{40265319 +3}

4 studies

Stabilize electrolytes in kidney disease — Keeps phosphorus, potassium, and sodium in safer ranges when kidneys struggle. ^38474743

1 study

Improve overall sleep quality — Deeper, less interrupted nights that leave you recharged by morning. ^{38606895 +1}

2 studies

Keep arteries flexible — Artery walls that stretch and recoil absorb each heartbeat smoothly. ^{19651674 +1}

2 studies

Sleep longer each night — More genuine sleep hours so your body finishes its repair cycles. ^{39203908 +1}

2 studies

Improve cellular hydration — Electrolytes direct the right amount of water inside and around your cells. ^{36678300 +4}

5 studies

Lower perceived effort during exercise — Same workout, same pace, but it feels less punishing. ^{40758095 +2}

3 studies

Lower homocysteine levels — Clears a vessel-irritating byproduct that builds when nutrient recycling falls behind. ^19651674

1 study

Reduce belly and deep abdominal fat — Targets the visceral fat that wraps around your organs and drives inflammation. ^{36960692 +1}

2 studies

Boost cardiovascular exercise output — Your heart pushes more blood per beat and sustains higher intensity longer. ^{20716911 +2}

3 studies

What doesn’t help

Claims without support

Retrieve words faster mid-sentence

The right word surfaces instead of stalling on the tip of your tongue.

Safety

What to watch for

⚠

severe vertigo — severe

⚠

Serous (exudative) retinal detachment (bilateral) — severe

⚠

acute_kidney_injury — severe

⚠

interstitial_nephritis — severe

⚠

pulmonary embolism — severe

⚠

deep vein thrombosis (left popliteal vein) — severe

⚠

acute_renal_failure — severe

⚠

acute_tubular_necrosis — severe

Interactions

Drug and supplement interactions

ketamine — major, increases_effect

immunosuppressants — major, increases_toxicity

other — major, increases_toxicity

other — moderate, increases_effect

cyclosporine — moderate, decreases_effect

other — moderate, unknown

amikacin — minor, decreases_effect

Synergies

What pairs well

Glucose

21 shared endpoints · d=1.07

Calcium

15 shared endpoints · d=0.49

Vitamind

10 shared endpoints · d=0.23

Protein

6 shared endpoints · d=0.49

Sodium

5 shared endpoints · d=1.02

Magnesium

5 shared endpoints · d=1.02

Potassium

5 shared endpoints · d=1.02

Caffeine

4 shared endpoints · d=0.59

Coffee

3 shared endpoints · d=0.38

The bottom line

If you lift, sprint, train hard, or want one of the best-supported supplements for preserving or building muscle, creatine monohydrate earns a spot near the top of your list.¹²³ If your main goal is fat loss, endurance, or a dramatic nootropic effect, keep your expectations calm: those effects look tiny, mixed, or still early compared with the muscle story.¹⁴

Frequently asked

Common questions

What does creatine actually do?

Creatine helps your cells remake ATP faster during short bursts of high demand, which is why the strongest evidence lands on strength, lean mass, and better training output over time.¹²³

Do you need a loading phase for creatine?

No. Loading with 20 g/day for about 5-7 days fills muscle stores faster, but a steady 3-5 g/day gets you to the same place more gradually.¹

Does creatine make you gain water weight?

Usually a little at first. Creatine pulls more water into muscle cells, so the scale can rise early even when body fat does not.¹³

Is creatine good for your brain?

Research suggests small benefits for memory, focus, and mental speed in some situations, but the brain evidence is much less consistent than the muscle evidence.⁴

When should you take creatine?

Any time you can take it every day. Consistency matters more than pre- or post-workout timing because creatine works by saturating your stores over days and weeks, not by giving an instant stimulant-like effect.¹

Which form of creatine is best studied?

Creatine monohydrate, easily. It dominates the human trial data, and newer forms have not consistently beaten plain monohydrate on the outcomes people actually care about.¹

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Sources

Generated April 3, 2026