Free shipping to AU · USA · NZ · UK 90-day money-back guarantee Cancel or pause anytime Australian made, batch tested Free shipping to AU · USA · NZ · UK 90-day money-back guarantee Cancel or pause anytime Australian made, batch tested Free shipping to AU · USA · NZ · UK 90-day money-back guarantee Cancel or pause anytime Australian made, batch tested

4.8 stars 2.1K reviews 500K+ members

Around 1 in 10 women live with endometriosis. You need more protein than most. You can stomach less than most.

That’s the endo trap, and a chicken breast doesn’t fix it on a flare day. OneFit® Clean Lean Protein gives you 25g in a drink, with no dairy, gluten or soy, for 125 calories.

Try it Risk-Free for 90 days · Free shipping to AU, USA, NZ & UK

A OneFit member standing at a bright kitchen bench beside a prepared chocolate drink and a bowl of lentils and greens, with a card reading 25g Clean Lean Protein per 35g serve, printed not blended.
The same completeness benchmark used for dairy protein.
01

Nobody warned you the pain would come with no appetite.

On a flare day, food is the last thing you want, so it’s the first thing you drop. Protein goes with it, and your energy and strength follow.

A weeknight kitchen at the end of a long day, labelled with the four pressures: no energy, nothing prepped, not enough protein, out of Tuesdays.
02

The diet that calms your endo is starving your muscle.

Cutting dairy, gluten and red meat is what most women do to manage flares, and it leaves you eating the foods with the least protein and almost no creatine. Both are what your muscle runs on, so it’s the first thing that goes.

Whole foods beside two cards naming the gaps: protein, lowest of any common way of eating, and creatine, almost none without meat.
03

The lowest-effort 25g of protein you’ll find.

No cooking, no chewing, nothing that sets your gut off. Clean Lean Protein, creatine and a probiotic in water, built for the days eating isn’t happening.

A OneFit sachet with callout lines naming Clean Lean Protein, creatine monohydrate and Lactobacillus paracasei.

A drink is a lower bar than a meal, not a replacement for one.

04

No dairy, no soy, no gluten. No downgrade either.

Every whey tub asks you to undo the diet you built to stay well. This one doesn’t, and it absorbs and gets used just as well as dairy, so nothing’s lost.

A bar chart of the completeness score: Clean Lean Protein scores 1.00 and dairy protein scores 1.00, the same DIAAS completeness benchmark.
05

Everything you’d buy separately, in one glass.

Protein, creatine, magnesium, a probiotic and 16 vitamins and minerals, at doses that actually do something, not a pinch of each so it can go on the label. Every amount is printed per serve, so you can check it before you trust it.

A stat grid beside a OneFit sachet: 25g Clean Lean Protein, 5g creatine, 20bn probiotics and 16 vitamins and minerals per 35g serve.
06

Endo doesn’t just hurt. It drains you.

Fatigue is on the same symptom list as the pain, and every meal you skip on a bad day makes it worse. Clean Lean Protein gets 25g of protein and the B vitamins that fight tiredness into you when eating isn’t happening, so the flare doesn’t take the whole week with it.

A glass of prepared chocolate drink on a marble bench beside a card reading: what it is, a daily drink, not a meal replacement. One serve alongside what you already eat.
07

Not a transformation. A week that holds.

No shake fixes endo, and we’re not going to pretend this one does. What it does is put protein in on the days that usually leave a gap, so the good days stop being spent recovering from the bad ones.

A week shown as seven squares, all of them filled, beside a card reading A Week That Holds Strong.

Your entire stack.
One sachet.

  • A OneFit member at a kitchen table tearing open a OneFit sachet and pouring it into a glass of water.
  • A OneFit sachet being slipped into the side pocket of a pair of leggings
  • A OneFit Chocolate Milkshake sachet being poured into a glass of water
View the full supplement facts

31 ingredients in 1 sachet

  • 25g Clean Lean Protein DIAAS 1.00, the completeness benchmark used for dairy protein
  • 5g European creatine monohydrate the nutrient this way of eating runs lowest on
  • 1g quad-electrolytes for hydration
  • 20bn CFU probiotics included in the formula
  • 16 vitamins & minerals at 125 calories and 0g sugar, in one 35g sachet

500,000+ members 2.1K reviews

OneFit®: 31 ingredients.
One sachet.

31 post-workout essentials in a single 35g serve, built around lean mass and the metabolism that carries it.

1 · Choose your format
2 · Choose your flavour

Don’t love it? Swap flavours within 24 hours, guaranteed.

3 · Pick your supply
Your selection
Price
Works out to
  • 90-day money-back guarantee
  • Free shipping to AU · USA · NZ · UK
  • Australian made, batch tested

Prices in AUD · Final price and offers confirmed at checkout.

Save money and time, with all eight essentials in one place.

The same eight things, bought separately, every month.

The OneFit Chocolate Milkshake carton with single-serve sachets and a prepared chocolate milkshake saved a year,
roughly

If you bought them individually

  • Protein powder79
  • Creatine49
  • Electrolytes39
  • L-Carnitine29
  • BCAAs29
  • Multivitamins59
  • Probiotics49
  • Magnesium39
Bought separately /day
OneFit®, 30-day supply /day
Annual saving, roughly /year

90-Day Money-Back Guarantee

“OneFit replaced six supplements I had in my cupboard…”

Jake R., Verified Member

Over 500k Happy OneFit Customers

A OneFit Chocolate Milkshake sachet being poured into a glass

Trusted daily by 500,000+ members.

4.8

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  • 90-dayfull refund guarantee
  • Every batchthird-party lab tested

Quality you can trust.Australian made, third-party tested every batch.

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4.8/5.0 rating · 2.1K reviews

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The questions everybody asks.

Is Clean Lean Protein actually a complete protein?

Yes, by the measure that matters. DIAAS scores how much of a protein your body can absorb and use, and Clean Lean Protein scores 1.00, the same completeness benchmark applied to dairy protein.

It is also high in lysine, which is the amino acid that cereal-based diets most often run short on. That makes it a sensible pairing with the way most dairy-free eating is built.

Do I need creatine if I don’t train?

Less than if you do. The evidence for creatine on strength and lean mass is evidence for creatine combined with resistance training. On its own, the trials found little.

The reason it is in this formula is different, and simpler: dietary creatine comes almost entirely from meat, so cutting meat out lowers your stores whether you train or not. Whether closing that gap is worth it to you depends largely on whether you lift.

Is it chalky? Most of these are.

It is the most common reason people abandon a protein, and a fair question to lead with. The Cacao in particular was formulated around that problem rather than around the ingredient list.

If the texture or flavour is not right for you, the flavour promise lets you swap within 24 hours, and the 90-day guarantee covers the rest.

How is this different from a normal protein powder?

Mostly by what else is in the serve. A plain protein gives you protein; this carries 5g of creatine, 250mg of magnesium, 1g of electrolytes and 16 vitamins and minerals alongside it, all printed per serve rather than folded into a blend.

If you already take a protein and a separate creatine and a multivitamin, this is those three in one drink. If you only want protein, buy a protein. We would rather say that than pretend otherwise.

How much is in OneFit®, and how do I take it?

25g of Clean Lean Protein and 5g of creatine monohydrate per 35g serve: one sachet or one scoop, shaken into 300ml of water. One serve daily, at whatever time you will actually remember it.

When should I 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. Pick a time of day that is easiest to keep.

Who is it for?

Anyone who wants one daily serve covering protein, creatine, electrolytes and micronutrients instead of managing several separate products, and anyone for whom eating enough on a given day is the hard part. It is not a weight-loss product, it is not a treatment for any condition, and it is not a replacement for meals.

How does it fit into a daily routine?

It replaces the stack rather than adding to it. One sachet covers what most people were buying as separate tubs: 25g of protein, 5g of creatine, 1g of electrolytes and 16 vitamins and minerals, all in the same drink and all printed per serve.

Will this help my endometriosis?

No, and we are not going to imply otherwise. This is a food product covering the nutrition side. It does not treat, manage or relieve endometriosis or pain of any kind, there is no study behind this variant showing anything of the sort, and it is not a substitute for the medical care you are under.

What it is: 25g of protein in a form that goes down on a day a meal won’t, with every dose printed per serve. Questions about the condition itself belong with your doctor.

What if I don’t like it?

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.

Why First or Nothing
No proprietary blends
Every amount is printed and verifiable. 20 billion CFU of Lactobacillus paracasei is on the sachet itself, named to the species, not buried inside a blend.
Third-party lab tested, every batch
Not once at launch. Every batch, with results published.
Australian made
Premium ingredients, made transparently in Australia.
Versioned, not fixed
The formula is reviewed and updated as new science emerges. Currently supplying OneFit® v4.7.
No gums, oils or harmful additives
And nothing included at a dose too small to do anything.
Ingredients & allergens

Per 35g serve: Clean Lean Protein isolate, micronised creatine monohydrate, L-carnitine tartrate, BCAA 2:1:1, magnesium citrate, potassium citrate, sodium chloride, Lactobacillus paracasei, plus 16 vitamins and minerals, natural flavouring and sweetener.

Dairy-free and gluten-free; lactose nil detected. No collagen and no other animal-derived protein. Not intended for children, or for anyone pregnant or nursing, without medical advice.

Science & testing

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.

Directions

Take one serve daily. Blend or shake one 35g sachet (or one scoop) into 300ml of water or a beverage of your choice, at the same time each day.

How to prepare OneFit: one sachet shaken into 300ml of water
Full supplement facts

Per 35g serve (1 sachet or 1 scoop), Rich Cacao. 20 servings per package.

OneFit supplement facts per 35g serve
Energy562kJ / 125kcal
Protein25.0g
Fat, total2.0g
Carbohydrates1.6g (sugars 0.6g)
Dietary fibre1.0g
Creatine monohydrate5.0g
L-Carnitine tartrate1.0g
BCAA (2:1:1)1.05g
Glycine1.0g
Magnesium250mg
Sodium191mg
Potassium186mg
Probiotics (L. paracasei)20 billion CFU
Iron1.4mg (12% DI)
Vitamin B12 / folate / B622mcg / 115mcg / 0.9mg
Vitamin C / D / E50mg / 5mcg / 23mg

Percentage daily intakes are based on an average adult diet of 8700kJ. Batch tested between 100–105 calories.

Not a treatment.
The nutrition half of the job.

25g of Clean Lean Protein, 5g of creatine monohydrate and 250mg of magnesium per serve, at 125 calories. Dairy-free, gluten-free, soy-free and nut-free, with every amount printed.

Try OneFit® Risk-free today

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