Best known for the gym, but its reach is wider. Here is what creatine really does, and where the evidence is strong or still emerging.
Reviewer: Veronica Giudice (Dietitian)
Creatine is one of those supplements that sits in the tub looking utterly unremarkable, a tasteless white powder, yet it is among the most studied in all of sports science. Most people take it to build muscle, which is real and well proven. But its reach is wider than the gym, and for some people, women at midlife especially, that wider reach is the interesting part. Here is what creatine really does, and, just as importantly, where the evidence is strong and where it is still emerging.
What creatine is, and what it does
Your body already makes creatine, and you get more of it from meat and fish. It is stored mostly in your muscles as phosphocreatine, which your cells use to regenerate ATP, the body’s fast energy currency, during short bursts of hard effort. Supplementing tops up those stores. With fuller stores you have more quick energy on tap, which is why creatine reliably improves strength, power and the ability to train hard, especially in short, repeated, high-intensity efforts. Doses of 3 to 5 grams a day are the best studied.
The muscle benefit, and why it matters when you are losing weight
Creatine’s clearest benefit is muscle. Combined with resistance training, it helps you build and hold onto lean muscle. That matters most to people you might not expect. Not bodybuilders, but anyone losing weight. When you lose weight, especially on a GLP-1 medicine, some of what you lose can be muscle, and muscle is what keeps you strong and keeps your metabolism up. Creatine, alongside enough protein and some strength work, is one of the best-evidenced ways to protect that muscle while the fat comes off. Our guide to eating well on a GLP-1 covers the protein side
Creatine through perimenopause and menopause
If there is one group creatine may suit especially well, it is women through perimenopause and menopause. Three things shift at this stage that creatine speaks to, though the strength of the evidence differs for each:
- Muscle. Falling oestrogen speeds up muscle loss, and this is where creatine is on firmest ground. With resistance training, it helps preserve and build the muscle that keeps you strong and steady.
- Bone. This is the one to be honest about. It is often claimed that creatine strengthens bone, but the large trials in postmenopausal women have not shown a clear improvement in bone density. What it does do is support the muscle and strength that protect against falls, which helps bone health indirectly.
- Mind. The drop in oestrogen can bring brain fog and low mood. Creatine helps supply the brain with energy, and early research hints at benefits for mental clarity and mood, particularly under stress, poor sleep or low dietary intake. The menopause-specific evidence is still emerging, so treat this as promising rather than proven.
There is one more reason it may suit women. They tend to have lower natural creatine stores than men, so they may respond more to topping them up. If midlife muscle, strength and energy are on your mind, creatine is a low-risk option worth discussing. You can read more about what changes at menopause
What about the brain and bone claims you see online?
Creatine is having a moment on social media, and not every claim holds up. The brain benefits are real but narrow. They are clearest in older adults, in vegetarians, and when you are sleep-deprived or under stress, and weak in healthy, well-rested people. Faster recovery and less muscle soreness have some support, but the effect is modest. And as above, a direct benefit to bone density is not well established. The honest summary is this. Creatine is rock-solid for muscle and strength, promising for the brain and for ageing, and oversold in places. That is still a strong record for a cheap, safe supplement.
Is it safe?
Yes, for healthy people, and it has one of the best safety records of any supplement. After 25 years of research, creatine monohydrate at normal doses has shown no harm to the kidneys, and the old worry that creatine wrecks your kidneys is not supported in healthy people. Two sensible caveats. If you have kidney disease, or you are pregnant or breastfeeding, check with your clinician first. And expect a small, harmless gain of a pound or two of water held in the muscle early on, which is not fat.
How to take it
It is refreshingly simple:
- Use creatine monohydrate. Almost all the research is on this form, and the fancier, pricier versions have no proven advantage.
- Take 3 to 5 grams a day, every day, including rest days. Consistency is what fills and keeps your stores topped up.
- You do not need to load. A loading phase fills your stores faster but is not necessary. A steady daily dose gets you there within a few weeks.
- Take it with a carbohydrate-based meal or snack. Carbohydrate helps drive creatine into the muscle, so pairing it with food is a simple way to get more from your dose. It also helps if the powder unsettles your stomach.
- The time of day does not matter. Morning or evening, before or after training, makes no meaningful difference. This is one of the most common questions we are asked, and the honest answer is that only the daily habit counts.
What to look for when buying
The supplement aisle loves to complicate a simple product:
- Look for plain creatine monohydrate, ideally third-party tested, or one carrying the Creapure mark.
- Ignore the extras. Advanced, HCL, buffered or blended versions charge more for no proven benefit.
- Be wary of proprietary blends that hide how much creatine you are getting.
- More is not better. There is no need to exceed the studied 3 to 5 grams a day.
Where we can help
At Envigore, protecting your muscle while you lose weight is central to what we do, and creatine is one of the tools that can support it. Our dietitian can advise whether it fits your plan, alongside your protein and training. If you have kidney problems, or you are pregnant or breastfeeding, speak to a clinician before starting. You can book a dietitian consultation at envigore.com
Frequently asked questions
These questions reflect the guidance above and are reviewed by our clinical team before publication.
It tops up phosphocreatine in your muscles, which your cells use to make fast energy during short, hard efforts. The result is more reliable strength and power, and, with training, more muscle. Your brain uses the same energy system, which is why creatine is being studied for mental performance too.
For healthy people, yes. After decades of research, creatine monohydrate at normal doses has not been shown to harm the kidneys, and the kidney worry is not supported. If you have kidney disease, or are pregnant or breastfeeding, check with your clinician first.
It may suit them well. Women tend to have lower natural creatine stores, and at menopause it can help preserve the muscle and strength that falling oestrogen erodes. The bone and brain claims are weaker, so see it mainly as support for muscle and strength, with training.
No to both. A loading phase fills your stores faster but is not necessary, and the time of day makes no meaningful difference. Taking it with a carbohydrate-based meal or snack does help it reach the muscle. A steady 3 to 5 grams a day is what counts.
It can add a pound or two early on, but this is water drawn into the muscle, not fat. Many people see it as a sign the creatine is working. Alongside training, any further change is muscle, which is the point.
+ Sources
- Kreider RB, Stout JR, et al. Creatine benefits, dosing and forms; and NiaHealth evidence summary, 2021 to 2026.
- Gatorade Sports Science Institute. Safety and efficacy of creatine monohydrate: 25 years of research, 2026.
- Cognitive Vitality / Alzheimer’s Drug Discovery Foundation. Creatine: bone (postmenopausal trials) and cognition review.
- Marshall S, et al. Creatine and cognition in ageing: a systematic review in older adults. Nutrition Reviews, 2026.
- Candow DG, Forbes SC, et al. Creatine monohydrate for older adults and clinical populations. PMC.
- Short review of common safety concerns regarding creatine ingestion (kidney, hydration). PMC, 2026.
About Your Clinical Team
This content was medically reviewed and approved by Danny Gian Hou Chu, a HCPC-Registered Advance Paramedic Prescriber (PA38670), who oversees all prescribing decisions at Envigore.
All prescriptions are dispensed by Right Medicine Pharmacy, a GPhC-Registered Pharmacy (No. 9012382).
Nutritional guidance and lifestyle support is provided by Veronica Giudice, a HCPC-Registered Dietitian (DT26570) and British Dietetic Association member.
Last medically reviewed: July 2026