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Creatine used to be filed under "gym supplement" — all giant shakers and tubs of protein powder. That's changed. It's now one of the most studied supplements there is, and researchers are paying particular attention to what it may offer women, well beyond sport. Here's an honest look at where the evidence is strong, where it's promising, and where it's still early.
What creatine actually is
Creatine is a compound your body makes naturally from amino acids — around 1–2 grams a day — and it helps your cells produce quick energy. It's concentrated in muscle, which is why it supports strength and short bursts of effort, but the brain, heart, bones and gut also draw on it when they need fast energy. You can get some from food, but you'd need to eat a great deal of meat to reach a meaningful amount, so for many women — especially those eating little or no meat — a supplement is the practical route.
What to look for
Keep it simple: choose creatine monohydrate. Seeing "creatine monohydrate" on the label is all you need — fancier blends don't add quality. A general dose of about 3–5g a day suits most women at any activity level, from pilates and yoga to running. It takes roughly three weeks of consistent daily use to fully "top up" your muscle stores, so steadiness matters more than any single dose.
Exercise, recovery and mood
Whatever your training looks like, 3–5g a day may help you recover faster between sets and after sessions, ease soreness, and even support your mood on days when motivation is low. You don't need to be lifting heavy for it to be relevant.
Sleep and focus
Here's a nuance worth getting right. A study in Scientific Reports found that a single high dose — around 25g, far above the daily 3–5g — temporarily supported cognitive performance during sleep deprivation. It's an intriguing, early finding from a small study, not a green light to take high doses routinely. For everyday poor sleep, creatine isn't a sleep aid; think of it as a possible support, especially around training days, rather than a fix.
Hormones and the menstrual cycle
Creatine doesn't change your hormone levels directly, but it may have indirect effects across the ups and downs of oestrogen and progesterone. In the luteal phase — from ovulation to your period, when energy and mood can dip — some research suggests it may help you feel a little more stable, and a 2023 study found better repeated-sprint performance in women using creatine during this phase (at around 5g a day).
Pregnancy, perimenopause and menopause
In pregnancy, most of the encouraging research is still in animals, so creatine isn't a standard recommendation yet — promising, but not established. Perimenopause is where it gets genuinely interesting: with the hormone swings, disrupted sleep and dips in energy of that stage, some studies show improvements in mood and brain energy even without strength training, though we need more research. After menopause, as oestrogen falls more sharply, the picture shifts: pairing creatine with resistance training looks promising for protecting bone density, reducing fracture risk and supporting strength — and here the studies tend to use higher doses, around 8–10g a day, always alongside exercise.
So, is creatine a must-have? No — the research in women is still growing, so no one needs to feel it's essential. But what we have so far is genuinely encouraging. If you're looking for ways to steady your energy, protect your bones and support brain function, it's a low-risk, evidence-informed option worth discussing with your doctor. If you're new to it, you can even start with a smaller amount and build up.
This article is for general information and isn't a substitute for individualised advice from your own doctor or dietitian.
Merve Tığlı, Dietitian
Sources: Creatine Supplementation in Women's Health: A Lifespan Perspective — Journal of the International Society of Sports Nutrition; Effects of Creatine and Resistance Training on Bone Health in Postmenopausal Women — randomised controlled trial; Single-dose creatine improves cognitive performance during sleep deprivation — Scientific Reports (2024).