Why monohydrate, specifically, and not the newer forms
Creatine monohydrate is the form used in essentially every positive creatine trial over the past three decades. The International Society of Sports Nutrition's position stand treats it as the reference standard. Every newer form gets compared to it, and generally fails to beat it.
Newer forms exist: creatine HCl, buffered creatine (marketed as Kre-Alkalyn), creatine ethyl ester. They get marketed on claims of better absorption or less water retention and bloating.
None of those claims hold up well against monohydrate in head-to-head research. Monohydrate remains both the cheapest and the best-supported option. Barring a documented digestive intolerance, there's no performance reason to pay more for a newer form.
How much to take
3 to 5 grams a day, taken consistently, is the dose covered in essentially all of the foundational research. It's sufficient to fully saturate muscle creatine stores within about 3 to 4 weeks of daily use.
Larger individuals can reasonably use the upper end of that range. There's little evidence that meaningfully exceeding 5g/day adds additional benefit for general training.
The full breakdown of timing (before vs after a workout, whether to take it on rest days, and why the timing question matters far less than people assume) is covered separately in when to take creatine. This guide focuses specifically on what to buy and how much.
Should you load?
Loading means taking roughly 20g a day, split into 4 doses, for 5 to 7 days. It brings muscle creatine stores to saturation faster: about a week instead of about a month. That's the entire benefit. It changes the timeline, not the final saturation level.
Loading is genuinely useful with a specific reason to want faster saturation, a competition or event within the next couple of weeks. For everyone else, it's a week of taking four times the normal amount, with a meaningfully higher chance of stomach upset.
Skipping the loading phase and starting at 3 to 5g/day daily reaches the same destination a few weeks later, with less GI risk along the way.
| Approach | Daily amount | Time to full saturation | Trade-off |
|---|---|---|---|
| Loading phase | ~20g/day, split into 4 doses, for 5 to 7 days | ~1 week | Higher GI upset risk, more product used |
| No loading | 3 to 5g/day | ~3 to 4 weeks | Slower start, gentler on digestion |
Micronized vs regular, and what Creapure means
Micronized creatine is monohydrate processed into smaller particles. It dissolves more completely in water and cuts the gritty texture some people dislike. Chemically identical to standard monohydrate, so the performance outcome is the same. Purely a mixing-experience difference, not worth a large premium.
Creapure is a specific, branded creatine monohydrate manufactured in Germany. It's widely regarded in the industry for exceptionally high purity and low levels of manufacturing byproducts, like dicyandiamide and dihydrotriazine, that can appear in lower-quality production.
Many finished supplement brands license Creapure and print its logo on the label specifically to signal that sourcing. If purity matters to you, the Creapure logo is a more checkable signal than a brand's own purity claims.
What to do if you forget a dose
Just take it when you remember and continue as normal. Creatine works by maintaining a saturated store built up over weeks, so a single missed day has no meaningful effect on that store. Don't double up the next day to compensate; there's no benefit to it.
Does it matter what you mix it with?
Creatine dissolves in water, though not perfectly, which is the grittiness micronization addresses. Mixing it into juice or a carbohydrate-containing drink was historically thought to boost uptake through an insulin response, though the effect size in more recent research is smaller than early studies suggested.
Plain water works fine for the vast majority of people. Simplicity here beats chasing a marginal uptake difference that the newer research doesn't strongly support.
Creatine for women and older adults
Creatine research has historically skewed heavily male, but the more recent literature specifically studying women shows similar strength and power benefits, along with emerging research on potential benefits for bone density and cognitive function around menopause. Dosing recommendations don't meaningfully differ by sex.
For older adults, creatine combined with resistance training shows some of the more consistent benefits in the literature, supporting muscle mass and strength preservation as part of healthy aging. It's one of the few supplements on this site's radar with genuinely broad, cross-population support rather than a narrow use case.
Does creatine work for everyone?
Most people respond to creatine supplementation with measurable strength and power gains, but response size varies genuinely by starting point. Vegetarians and vegans typically start with lower muscle creatine stores, since dietary creatine comes almost entirely from meat and fish, and often see a larger relative improvement from supplementation than habitual meat eaters who start closer to saturation already.
A small minority of people are classified as non-responders in research, showing little measurable change even with consistent use. This appears linked to already-high baseline muscle creatine levels rather than any flaw in the supplement itself.
Three myths worth retiring
"Creatine damages your kidneys." This claim traces back to the fact that creatine supplementation raises serum creatinine, a marker doctors use to screen kidney function, causing false alarms.
In healthy people with normal kidney function, decades of research, including long-term studies, show no evidence of actual kidney damage from standard creatine doses. People with pre-existing kidney disease are the exception and should talk to a doctor first.
"Creatine causes hair loss." This rests almost entirely on a single small study that found an increase in DHT (a hormone linked to male pattern baldness) in college rugby players taking creatine, without ever measuring actual hair loss as an outcome.
No study has directly demonstrated creatine causing hair loss. The evidence gap between "one hormone went up" and "you will go bald" is considerable.
"The weight gain from creatine is fat." Initial weight gain, typically 1 to 2 kilograms in the first few weeks, is water retained inside muscle cells as creatine pulls water in with it, part of the same saturation process discussed above. It is not fat gain, and it typically stabilizes once muscle stores are fully saturated.
What brands to actually look at
Optimum Nutrition's Micronized Creatine Monohydrate is the best-selling creatine product in the US market, widely available and independently tested through Informed Choice certification. Thorne's Creatine and Klean Athlete's Klean Creatine both use Creapure-sourced monohydrate and carry NSF Certified for Sport status, good picks for anyone in a drug-tested sport. Momentous Creatine is another NSF Certified for Sport option built around Creapure sourcing.
What to avoid: proprietary "creatine blends" combining monohydrate with several other forms at a combined, undisclosed weight. Same proprietary-blend problem covered in how to read a supplement label, applied to a category where one well-studied ingredient is all you need. The site's creatine monohydrate guide grades that single-ingredient evidence in full.
- Pick plain creatine monohydrate, not a blend of multiple forms
- 3 to 5g/day, taken consistently, including on rest days
- Micronized is a mixing convenience, not a performance upgrade
- Creapure or NSF Certified for Sport on the label signals verified sourcing and purity