Yes, women can take creatine, and the usual research dose is 3–5 g of creatine monohydrate per day. In several controlled trials with women, creatine combined with resistance training produced larger strength gains than training alone, and a 2020 review of 29 studies covering 951 women found no significant difference in adverse events or body weight compared with placebo. Early weight gain is mostly water, it shows up mainly during an optional high-dose loading phase, and you don't have to load.
Key takeaways
- Dose: 3–5 g per day is the standard maintenance dose. A loading phase (about 0.3 g/kg body weight, or roughly 20 g/day, for 5–7 days) saturates muscle faster but is optional.
- Results depend on training: The strength and lean mass benefits seen in women come from trials that paired creatine with resistance training.
- Water weight: Short-term loading raises body water. Longer studies mostly show little or no lasting change, and a meta-analysis in women found no significant weight difference compared with placebo.
- Women over 40: Studies in postmenopausal women show modest strength benefits, especially in programs lasting 24 weeks or longer. A 2-year trial found no effect on bone mineral density.
- Safety: The International Society of Sports Nutrition (ISSN) considers creatine safe for healthy people at recommended doses. Check with a doctor if you are pregnant, breastfeeding, have kidney disease, or are under 18.
Why women may start with lower creatine stores
Your body makes creatine and also gets it from food, mainly meat and fish. Most of it is stored in muscle, where it helps supply energy for short, hard efforts like lifting. According to the ISSN position stand, a typical omnivorous diet supplies about 1–2 g of creatine per day, roughly half of what the body needs, and muscle stores usually sit at about 60–80% of full saturation. Supplementing can raise muscle creatine by roughly 20–40%.
A 2021 review of creatine in women's health notes that women generally eat less dietary creatine than men. Diet matters most for people who eat little or no meat. In one 8-week training study, vegetarians started with lower muscle creatine than meat eaters (about 117 vs. 130 mmol/kg dry muscle). Those who started lowest gained the most muscle creatine from supplementing, so plant-based eaters may see a bigger relative change.
What trials in women actually measured
Most creatine research has been done in men; only about 9% of the studies identified in one systematic review were female-only. The work in women mostly looks at strength, lean mass, body water and safety.
The research below concerns creatine as an ingredient, not any finished MAXIS product.
| Study | Population | Creatine dose | Duration | Main finding |
|---|---|---|---|---|
| Vandenberghe et al. (1997) | 19 previously sedentary young women | High-dose loading (20 g/day for 4 days), then 5 g/day | 10 weeks of resistance training | Greater gains in maximal strength and fat-free mass than placebo; the advantage held during a detraining period |
| Aguiar et al. (2013) | 18 women, average age about 65 | 5 g/day | 12 weeks of resistance training | Greater gains in maximal strength, fat-free mass and muscle mass, and better performance on functional tests such as chair stands |
| Chilibeck et al. (2023) | 237 postmenopausal women, average age 59 | 0.14 g/kg/day | 2 years of resistance training and walking | No difference in femoral neck bone mineral density; hip bone geometry was better maintained and walking speed improved more than with placebo |
| Moore et al. (2023) | 30 active women, average age about 25 | 20 g/day | 5 days, tested in follicular and luteal phases | In the luteal phase, total body water rose about 0.8 L, with no significant change in body weight |
| Santos et al. (2021), meta-analysis | 10 trials in women aged about 56–70 | Varied | 12–52 weeks with resistance training | Improved upper- and lower-body strength in trials of at least 24 weeks; no significant effect on muscle mass; evidence certainty rated low |
The pattern: creatine works as an add-on to resistance training, not a substitute for it. Results aren't uniformly positive. In the 2-year postmenopausal trial, strength rose equally in both groups, a lean mass difference appeared only among participants who completed the study as planned, and supplement compliance was low. Some trials in already-trained women found no extra benefit over training alone.
Creatine for women over 40
Muscle mass and strength tend to decline with age, so researchers have looked closely at creatine in older women. The 2021 meta-analysis of trials in women aged roughly 56–70 found creatine plus resistance training improved strength more than training alone, but clearly only in programs of at least 24 weeks, with no significant effect on muscle mass and low-certainty evidence overall.
On bone, the largest trial so far (two years, 237 postmenopausal women) found creatine had no effect on bone mineral density at the hip or spine, though some measures of hip bone geometry were better maintained. That is an interesting signal, not a reason to take creatine for bone health. If bone density concerns you, talk with your doctor.
Menstrual cycle and pregnancy: what's known
Research on creatine across the menstrual cycle is still early. In one randomized crossover trial, five days of creatine loading increased total, intracellular and extracellular body water during the luteal phase without a significant change in body weight. No difference appeared in the follicular phase. The study was small and didn't confirm ovulation, so it's best read as a starting point, not a guide to timing your dose around your cycle.
Researchers are interested in creatine during pregnancy, but 2021 reviews reported no human trials of creatine supplementation in pregnant women; the supportive findings come from animal studies. If you are pregnant or breastfeeding, don't start creatine without talking to your doctor or midwife.
How much creatine should a woman take?
Women can use the same dosing approaches studied in men. The 2021 women's health review reached this conclusion, and it noted that a loading phase raised muscle creatine by about 19% in women, similar to men.
- Daily dose (no loading): 3–5 g per day. One study found that 3 g/day for 28 days raised muscle creatine about as much as 20 g/day for 6 days. It just takes longer, roughly 3–4 weeks to reach saturation.
- Loading (optional): about 0.3 g/kg body weight per day, usually around 20 g split into four 5 g doses, for 5–7 days, then 3–5 g/day. For a 65 kg (143 lb) woman, 0.3 g/kg works out to about 20 g/day. Loading is where most of the quick water-weight gain and stomach upset happens.
- Body-weight dosing: Some trials dosed by weight, such as 0.14 g/kg/day (about 9 g at 65 kg) in the 2-year postmenopausal study. For most people, a flat 3–5 g/day is simpler and well supported.
Consistency matters more than the exact time of day. Take it daily, including rest days. If you're choosing between powders, our guide to micronized vs. regular creatine monohydrate explains the difference.
Creatine, weight gain and bloating in women
Short term, body water goes up. Creatine pulls water into muscle along with it, and studies of a few days of loading show increases in total body water. That's why the scale can tick up in the first week, especially if you load.
Longer term, the picture is calmer. A 2021 ISSN review of common creatine questions concluded that, over weeks to months, creatine generally does not cause lasting water retention. Several longer studies found no significant change in body water compartments. Where body water did rise over 8 weeks, it increased in proportion to muscle, which is what you would expect if muscle is growing.
In women specifically, the 2020 meta-analysis of 29 studies found no significant difference in body weight between creatine and placebo groups. It also found no significant difference in gastrointestinal complaints, which include bloating. Creatine also does not appear to increase body fat. Randomized trials lasting from one week to two years have not shown fat gain.
If you're concerned about a puffy feeling, skip the loading phase and start with 3–5 g/day. Single servings above about 10 g are more likely to cause stomach discomfort, so if you do load, split the daily amount into several smaller doses.
Is creatine safe for women?
The ISSN position stand concludes that short- and long-term creatine monohydrate supplementation is safe and well tolerated in healthy people at recommended doses. In the women-specific meta-analysis, no deaths or serious adverse events were reported, and kidney and liver markers stayed within normal ranges.
On kidneys, the ISSN's 2021 review notes that the concern largely traces back to a 1998 case report in a man with pre-existing kidney disease. In healthy people, research at recommended doses has not shown harm to kidney function. One practical point is that creatine can raise blood creatinine, a common lab marker used to estimate kidney function, without any actual kidney damage. Tell your doctor you take creatine before blood work so results are read correctly.
Check with a doctor first if you:
- are pregnant or breastfeeding, since there are no human trials of creatine supplementation in pregnancy;
- have kidney disease or reduced kidney function, or take medications that affect the kidneys;
- are under 18, because evidence in adolescents is limited, even though available trials have not shown adverse effects;
- have any chronic medical condition or take prescription medications.
Where MAXIS Creatine fits
MAXIS Micronized Creatine Monohydrate is a single-ingredient powder: 5 g of creatine monohydrate per scoop, unflavored, with no other ingredients. Each 500 g tub contains 100 servings. Take one scoop in 8 oz of water, one or two times daily. It supports increases in strength and lean body mass when combined with resistance training.†
One scoop a day lines up with the 3–5 g daily range used in research. If you'd rather take creatine and protein together, it's also included in the Strength Stack with grass-fed whey.
FAQ
Should women take creatine?
If you lift and want to get stronger, creatine is one of the best-studied supplements, and the research in women supports using it alongside training. It won't do much without a training program. Women who eat little or no meat may see more benefit because they start with lower stores.
Does creatine make women gain weight?
It can add a little water weight in the first week, mostly if you load. A meta-analysis in women found no significant body weight difference versus placebo, and trials have not shown increases in body fat.
Will creatine make me bloated?
In the women-specific meta-analysis, stomach complaints such as bloating were no more common with creatine than with placebo. Skipping the loading phase and avoiding large single servings makes upset less likely.
Is creatine good for women over 40?
Trials in women in their 50s and 60s show modest strength benefits when creatine is paired with resistance training for about six months or longer. Effects on muscle mass and bone density have been inconsistent.
References
- Kreider RB, Kalman DS, Antonio J, et al. (2017). 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. https://doi.org/10.1186/s12970-017-0173-z
- Antonio J, Candow DG, Forbes SC, et al. (2021). Common questions and misconceptions about creatine supplementation: what does the scientific evidence really show? Journal of the International Society of Sports Nutrition. https://doi.org/10.1186/s12970-021-00412-w
- Smith-Ryan AE, Cabre HE, Eckerson JM, Candow DG (2021). Creatine Supplementation in Women's Health: A Lifespan Perspective. Nutrients. https://doi.org/10.3390/nu13030877
- de Guingand DL, Palmer KR, Snow RJ, Davies-Tuck ML, Ellery SJ (2020). Risk of Adverse Outcomes in Females Taking Oral Creatine Monohydrate: A Systematic Review and Meta-Analysis. Nutrients. https://doi.org/10.3390/nu12061780
- Vandenberghe K, Goris M, Van Hecke P, Van Leemputte M, Vangerven L, Hespel P (1997). Long-term creatine intake is beneficial to muscle performance during resistance training. Journal of Applied Physiology. https://doi.org/10.1152/jappl.1997.83.6.2055
- Aguiar AF, Januário RSB, Junior RP, et al. (2013). Long-term creatine supplementation improves muscular performance during resistance training in older women. European Journal of Applied Physiology. https://doi.org/10.1007/s00421-012-2514-6
- Chilibeck PD, Candow DG, Gordon JJ, et al. (2023). A 2-yr Randomized Controlled Trial on Creatine Supplementation during Exercise for Postmenopausal Bone Health. Medicine & Science in Sports & Exercise. https://doi.org/10.1249/MSS.0000000000003202
- dos Santos EEP, de Araújo RC, Candow DG, et al. (2021). Efficacy of Creatine Supplementation Combined with Resistance Training on Muscle Strength and Muscle Mass in Older Females: A Systematic Review and Meta-Analysis. Nutrients. https://doi.org/10.3390/nu13113757
- Moore SR, Gordon AN, Cabre HE, Hackney AC, Smith-Ryan AE (2023). A Randomized Controlled Trial of Changes in Fluid Distribution across Menstrual Phases with Creatine Supplementation. Nutrients. https://doi.org/10.3390/nu15020429
- Burke DG, Chilibeck PD, Parise G, Candow DG, Mahoney D, Tarnopolsky M (2003). Effect of creatine and weight training on muscle creatine and performance in vegetarians. Medicine & Science in Sports & Exercise. https://doi.org/10.1249/01.MSS.0000093614.17517.79
†These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
