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That’s the change nobody warned you about, and it’s the one you can actually do something about. OneFit® is one sachet a day with everything that muscle needs to stay.
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Hot flushes, sleep, mood. That is the conversation, and it is real. Underneath it, lean mass falls while fat rises and recovery stops keeping pace. That is not effort failing you. It is tissue, and tissue you can feed.
As oestrogen drops, your body starts swapping muscle for fat, and the muscle you lose was holding your shape and burning your calories. Keeping it takes more protein than it used to, so OneFit® puts 25g in one daily sachet.
That’s the trap of your 40s and 50s: the target goes up while the plate gets smaller. OneFit® solves it in one sachet, 25g of protein for 100 calories, no bigger meals required.
Most tubs give you a few grams, a dose picked to fit on the label rather than to work. OneFit® gives you 25g every day, and it doubles as your protein, so you can throw the beauty tub out.
Creatine at 5g and magnesium at a real dose are two of the best-supported ways to hold onto muscle, and neither is sold to women. OneFit® has both in one sachet, with your protein, so you don’t have to go and buy them.
Muscle after 40 takes two things, resistance training and enough of the right nutrition, and only one of them fits in a sachet. OneFit® is that one: 25g protein, 5g creatine, magnesium and 16 vitamins and minerals for 100 calories a day.
Energy steadies, your stomach settles, then week 12 shows you what you’ve been working for. 750+ women went through it in the study, and nearly all reported that exact order.
31 ingredients in 1 sachet
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OneFit®: 31 ingredients.
One sachet.
31 post-workout essentials in a single 35g serve, built around lean mass and the metabolism that carries it.
The same eight things, bought separately, every month.
saved a year,If you bought them individually
“OneFit replaced six supplements I had in my cupboard…”
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4.8/5.0 rating · 2.1K reviews
See all reviewsCreatine monohydrate is one of the most heavily studied supplements in existence. Across controlled trials, adverse events have been mild and comparable to placebo, and kidney markers unchanged.
That said, if you have existing kidney disease or take medication that affects kidney function, this is a question for your doctor rather than a product page.
No, and we would rather say so plainly, because a great deal of menopause marketing implies otherwise.
Trials that measured bone mineral density alongside creatine and resistance training found no reliable increase from the supplement. Bone density belongs to the training argument, not to this sachet. If bone is your concern, that is a conversation for your GP.
No. Trials in this age group routinely recruit women with no training history, and resistance training produces measurable strength gains well into later life. That is one of the better-established findings in the field. Two sessions a week is the figure the evidence keeps landing on, not five.
Start with something supervised if you can. Two sessions a week is the figure the evidence keeps landing on, not five.
Because it is the part that actually matters, and because the creatine result above assumes you are eating enough of it.
Protein requirements rise with age while most women’s intake does not. A serve here is 25g at 100 calories, which is a straightforward way to close part of that gap on days when cooking a high-protein meal is not happening.
25g of protein and 5g of creatine monohydrate per 35g serve: one sachet or one scoop, shaken into 300ml of water. One serve daily. Creatine works by saturating over time, so taking it every day matters more than when you take it.
Whenever you’ll actually remember it, at the same time each day. Daily consistency matters more than perfect timing. A serve taken every day beats a better-timed one taken twice a week. If you train, after training is a sensible anchor.
People who train at least a few times a week and want one daily serve covering protein, creatine, electrolytes, probiotics and micronutrients instead of managing four or more separate products. It isn’t a weight-loss product and it isn’t a replacement for meals.
It replaces the stack rather than adding to it. One sachet after training covers what most people were buying as four separate tubs. The formula is built around lean mass and probiotic among them. The gut ingredient is a named strain at a printed count sitting beside 25g of protein and 5g of creatine, rather than being sold on its own.
You’re covered by a 90-day full refund guarantee, and you can cancel or pause a subscription at any time. If it’s the flavour rather than the formula, the flavour promise lets you swap within 24 hours.
Per 35g serve: hydrolysed bovine collagen protein, micronised creatine monohydrate, L-carnitine tartrate, BCAA 2:1:1, glycine, magnesium citrate, potassium citrate, sodium chloride, turmeric extract, Lactobacillus paracasei, plus 13 vitamins and minerals, natural flavouring and sweetener.
Gluten: nil detected. Not intended for children, or for anyone pregnant or nursing, without medical advice.
Third-party lab tested every batch, with results published. Made in Australia to premium ingredient standards. The formula is versioned and revised as evidence develops. The current supply is v4.7.
Doses are set at amounts intended to be meaningful rather than label-filling: 20 billion CFU of Lactobacillus paracasei, 25g protein, 5g creatine monohydrate and 1g of elemental electrolytes per serve.
Take one serve daily, after training. Blend or shake one 35g sachet (or one scoop) into 300ml of water or a beverage of your choice. On rest days, take it at the same time each day.

Per 35g serve (1 sachet or 1 scoop), Chocolate Milkshake. 20 servings per package.
| Energy | 420kJ / 100kcal |
|---|---|
| Protein | 25.0g |
| Fat, total | 0.1g |
| Carbohydrates | 0.5g (sugars 0.1g) |
| Creatine monohydrate | 5.0g |
| L-Carnitine tartrate | 1.0g |
| BCAA (2:1:1) | 1.05g |
| Glycine | 1.0g |
| Magnesium | 181mg |
| Sodium | 294mg |
| Potassium | 139mg |
| Probiotics (L. paracasei) | 20 billion CFU |
| Vitamins & minerals | 13, incl. B12 1100% DV, biotin 317%, vitamin E 230% |
Percentage daily intakes are based on an average adult diet of 8700kJ. Batch tested between 100–105 calories.
25g of hydrolysed collagen protein, 5g of creatine monohydrate and 181mg of magnesium per serve, at 100 calories. Every amount printed on the sachet.
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