When looking at research on women, there is no clear picture that creatine causes serious side effects. This doesn't mean that no one experiences any issues, but it does mean that creatine is generally well-tolerated. The most commonly reported complaints are quite mild, such as some stomach or intestinal discomfort, a feeling of fullness, or minor changes in fluid distribution and weight. This is precisely why it's smart not only to ask if there are side effects, but also which complaints are genuinely more frequent and which are primarily mentioned without clearly exceeding placebo effects (de Guingand et al., 2020; Tam et al., 2025).
Are there side effects of creatine for women?
The clearest source on this is a large review that combined 29 studies in women. It found no clear difference between creatine and placebo regarding the total number of side effects of creatine for women, such as gastrointestinal complaints, weight, or blood values indicative of liver and kidney function (de Guingand et al., 2020). This is important because creatine in women is often immediately associated with bloating, weight gain, or "not reacting well."
This doesn't mean that no complaints are reported at all. Studies do mention complaints such as nausea, diarrhea, bloating, constipation, and mild abdominal discomfort. However, these complaints are not significantly more frequent with creatine than with placebo. This distinction is important. A complaint can be mentioned without immediately being able to say that creatine is truly the cause (de Guingand et al., 2020).
Weight gain is another point of much concern. The overall picture from the review found no significant increase in body weight. At the same time, a separate study in active women did show that creatine can influence the distribution of fluid in the body, especially in the luteal phase of the menstrual cycle. Total body water increased, without the scale immediately showing a much higher weight. This indicates that creatine and fluid retention are not the same as problematic fluid retention or unhealthy weight gain (Moore et al., 2023).
In terms of safety, longer studies also present a reassuring picture. In postmenopausal women, studies of one and two years found no significant adverse changes in blood values or other health markers (Lobo et al., 2015; Sales et al., 2020). Based on current research, creatine for women seems to be primarily associated with mild and usually temporary complaints, not with serious problems.
What does creatine do for women?
Creatine helps your muscles release energy quickly during short and intensive efforts. That's the basic principle. In that regard, creatine works the same for women as for men. The difference lies mainly in how it has been researched and in the situations where women use creatine, such as strength training, sprinting, recovery, or menopause (Tam et al., 2025).
Results in young active women are mixed. Some studies show a benefit for certain performances, while other studies find no additional effect beyond training. In one study with four weeks of HIIT, fitness and performance improved in both groups, but creatine offered no additional benefit over placebo (Forbes et al., 2017). This means that creatine does not automatically yield more results for women in every sports context.
There are indications that creatine can sometimes aid recovery and reduce fatigue. A study in active women across their menstrual cycle found no clear effect on heart rate variability but did show a beneficial effect on fatigue during a specific phase of the cycle (Gordon et al., 2023). Another study observed that women slept slightly longer on training days when using creatine, although overall sleep quality did not significantly change (Aguiar Bonfim Cruz et al., 2024).
Is creatine good for women?
The honest answer is that it depends on the situation. For older women, especially in combination with strength training, the picture looks more favorable than for young active women. A review with meta-analysis showed that creatine combined with resistance training can contribute to increased strength in older women, especially if the training program is longer (dos Santos et al., 2021).
For young athletic women, the picture is less clear. There are positive outcomes, but not enough to say that creatine always provides a noticeable benefit. The evidence there is more mixed. For postmenopausal women, creatine seems particularly interesting as part of a broader approach with training, not as a standalone supplement that automatically causes major changes (Tam et al., 2025; Sales et al., 2020).
For other areas, such as concentration, sleep, or mood, there are interesting initial results, but not yet enough to draw firm conclusions. This applies, for example, to research in peri- and postmenopausal women where improvements in reaction time were found (Korovljev et al., 2026). This is promising but not a hard final conclusion.
What are the benefits of creatine for women?
The benefits of creatine for women primarily seem to be in strength, training, and possibly the preservation of lean body mass. Especially in older women who train, creatine emerges most convincingly as a useful supplement. The most commonly observed benefits are:
- greater gains in strength in combination with resistance training
- possible support for lean body mass
- preliminary indications for recovery, sleep duration, or cognitive functions in specific groups
This does not mean that every woman will experience the same effect. In young active women, the results are less consistent. In older women, and especially with creatine and strength training for women combined, the benefit seems greater and more logical (dos Santos et al., 2021; Tam et al., 2025).
Conclusion: are there side effects of creatine for women?
When you consider everything, the conclusion is quite clear. Side effects of creatine for women do exist, but they are usually mild. These primarily involve gastrointestinal complaints, a feeling of fullness, or changes in fluid distribution. Research does not show that creatine causes significant serious side effects in healthy women, and weight gain does not automatically mean something unhealthy is happening (de Guingand et al., 2020; Moore et al., 2023).
At the same time, it's good to remain realistic. Not everything has been extensively researched yet. Less is known about very long-term use, pregnancy, breastfeeding, and women with existing kidney problems. For healthy women, creatine generally seems to be well-tolerated, but not every question has been fully answered.
FAQ
Can creatine cause weight gain in women?
Yes, it can, but it may not be significant or immediately visible. Research primarily shows that creatine can influence fluid distribution in the body, without necessarily meaning an increase in fat mass (de Guingand et al., 2020; Moore et al., 2023).
Do women experience side effects from creatine more quickly than men?
There is currently no clear evidence for this. Research in women primarily shows that creatine is usually well-tolerated, but there is less research specifically on women compared to the general creatine literature (Tam et al., 2025; de Guingand et al., 2020).
Is creatine safe for women long-term?
Studies lasting one to two years have shown no clear safety signals in postmenopausal women. However, less is known about very long-term use and specific groups, such as pregnant women or women with existing kidney problems (Lobo et al., 2015; Sales et al., 2020).
References
de Guingand, D. L., Palmer, K. R., Snow, R. J., Davies-Tuck, M. L., & Ellery, S. J. (2020). Risk of adverse outcomes in females taking oral creatine monohydrate: A systematic review and meta-analysis. Nutrients, 12(6), 1780. Click here
Tam, R., Mitchell, L., & Forsyth, A. (2025). Does creatine supplementation enhance performance in active females? A systematic review. Nutrients, 17(2), 238. Click here
dos Santos, E. E. P., de Araújo, R. C., Candow, D. G., Forbes, S. C., Guijo, J. A., de Almeida Santana, C. C., Prado, W. L., & Botero, J. P. (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, 13(11), 3757. Click here
Forbes, S. C., Sletten, N., Durrer, C., Myette-Côté, É., Candow, D., & Little, J. P. (2017). Creatine monohydrate supplementation does not augment fitness, performance, or body composition adaptations in response to four weeks of high-intensity interval training in young females. International Journal of Sport Nutrition and Exercise Metabolism, 27(3), 285–292. Click here
Lobo, D. M., Tritto, A. C., da Silva, L. R., de Oliveira, P. B., Benatti, F. B., Roschel, H., Nieß, B., Gualano, B., & Pereira, R. M. R. (2015). Effects of long-term low-dose dietary creatine supplementation in older women. Experimental Gerontology, 70. Click here
Sales, L. P., Pinto, A. J., Rodrigues, S. F., Alvarenga, J. C., Gonçalves, N., Sampaio-Barros, M. M., Benatti, F. B., Gualano, B., & Rodrigues Pereira, R. M. (2020). Creatine supplementation (3 g/d) and bone health in older women: A 2-year, randomized, placebo-controlled trial. The Journals of Gerontology: Series A, 75(5), 931–938. Click here
Moore, S. R., Gordon, A. N., Cabre, H. E., Hackney, A. C., & Smith-Ryan, A. E. (2023). A randomized controlled trial of changes in fluid distribution across menstrual phases with creatine supplementation. Nutrients, 15(2), 429. Click here
Korovljev, D., Ostojic, J., Panic, J., Ranisavljev, M., Todorovic, N., Nedeljkovic, D., Kuzmanovic, J., Vranes, M., Stajer, V., & Ostojic, S. M. (2026). The effects of 8-week creatine hydrochloride and creatine ethyl ester supplementation on cognition, clinical outcomes, and brain creatine levels in perimenopausal and menopausal women (CONCRET-MENOPA): A randomized controlled trial. Journal of the American Nutrition Association, 45(3), 199–210. Click here.
