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“L-Carnitine is the new GLP-1.” Not quite.
It’s what a GLP-1 doesn’t do.

A GLP-1 turns appetite down. It doesn’t feed you, and it doesn’t build muscle. 7 things worth knowing about the part that’s still yours to manage, and where L-Carnitine honestly fits.

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For GLP-1 users 91% reported more visible muscle definition 12-week controlled study, 750+ users
01

A GLP-1 handles appetite. It doesn’t handle the rest.

GLP-1 medications work on one thing, and they work on it well: how hungry you are. What they don’t do is feed you, build muscle or protect the lean mass you already have. That part is still yours to manage.

What a GLP-1 does: reduces appetite, slows stomach emptying, prescribed and supervised. What OneFit does: 25g protein for lean mass, 5g creatine for strength, 1,000mg L-Carnitine, 13 vitamins and minerals
If you take or are considering a GLP-1, speak to your doctor.

02

Eating less means getting less of everything

Appetite down means intake down, and intake is where protein, minerals and B vitamins come from. The less you eat, the more every single calorie has to earn its place.

What gets squeezed first: protein, the first to drop and what lean mass needs; B vitamins B12, B6 and folate; electrolytes sodium, potassium and magnesium; iron and zinc, harder to hit on a smaller plate

OneFit® carries all four in one 35g serve at 100 calories.

03

Lean mass is what’s actually at risk

Weight is not the same thing as fat. When intake drops sharply, the body takes some of what it needs from muscle, and muscle is what holds strength, shape and metabolic rate. Protecting it is a protein-and-training job, not an appetite job.

25g protein per serve. A OneFit Chocolate Milkshake sachet standing beside a black dumbbell
04

Where L-Carnitine actually fits

It’s a shuttle, not a fat burner. Fat can’t get into the part of your cell that burns it on its own, and L-Carnitine is what carries it across. That is the entire job, and it’s why the headline oversells it.

How it works: fatty acids in circulation, then L-Carnitine carries it in, then it is converted to energy
05

Dose is the whole argument

Most formulas list L-Carnitine at an amount too small to matter: it’s there to be named, not to do anything. The only number that counts is the one per serve, and it should be printed where you can read it.

Per serve, compared: a typical sprinkle is about 100mg, while OneFit is 1,000mg per 35g serve
06

One sachet covers the whole gap

This is the point of the formula. Not L-Carnitine on its own, but L-Carnitine next to the protein, creatine, electrolytes and micronutrients that a smaller plate stops delivering. 100 calories, once a day.

One 35g serve: 1,000mg L-Carnitine, 25g protein, 5g creatine, 1g electrolytes, 20bn probiotics, and 13 vitamins and minerals, beside a glass of chocolate milkshake
07

What you’ll notice, week by week

Recovery first, then results. This is what members report over a 90-day run. Individual results vary and depend on training, diet and consistency.

Week 4: strength climbs, recovery keeps pace. Week 8: waist and face lean out. Week 12: definition is clear, energy steady

Your entire stack.
One sachet.

  • A OneFit member at a kitchen table pouring a OneFit Chocolate Milkshake sachet into a glass of water
  • What 750+ OneFit customers experienced: 91% more visible muscle definition, 98% felt leaner in waist, face and overall, 87% less bloat and calmer gut, 62% clearer head and energy
  • 12-week clinical results. Real body composition changes: one member photographed before and after, marked +2.4kg lean muscle, 9% strength gain and −5.4% body fat
  • 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 hydrolysed collagen protein for lean mass and recovery
  • 1,000mg L-Carnitine for turning fat into energy
  • 5g European creatine monohydrate for strength and training output
  • 1g quad-electrolytes & 20bn CFU probiotics for hydration and a settled gut
  • 13 vitamins & minerals at 100 calories and 0g fat, 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

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“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

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The questions everybody asks.

What is L-Carnitine?

A compound built from two amino acids that your body produces on its own and also absorbs from food, and red meat is the richest source. It’s stored mostly in muscle, and was first isolated from muscle tissue in 1905.

What does L-Carnitine actually do?

Its main role is transport. Fatty acids can’t cross into the mitochondria, the part of the cell that burns fuel, without a carrier, and L-Carnitine is that carrier. Supporting that step is what supplementing it is for. It isn’t a “fat burner” in the sense the internet uses the phrase.

Is L-Carnitine a GLP-1?

No. GLP-1 medications are prescription drugs that mimic a gut hormone and act on appetite signalling. L-Carnitine is a nutrient that acts on fatty acid transport. Different category, different mechanism, different level of medical oversight. Nothing here suggests one substitutes for the other. If you take or are considering a GLP-1 medication, speak to your doctor.

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

1,000mg per 35g serve: one sachet or one scoop, shaken into 300ml of water or a beverage of your choice. One serve daily.

When should I take it?

After training, ideally. Exercise acutely increases metabolic responsiveness, so that’s the most useful window. On rest days take it at the same time each day. Daily consistency matters more than perfect timing.

Who is it for?

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.

How does it fit into a fitness routine?

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 recovery, which is why L-Carnitine sits beside 25g of protein and 5g of creatine rather than being sold on its own.

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. 1,000mg of L-Carnitine is on the sachet itself, 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: 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. Plant-based options use pea protein in place of collagen. 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: 25g protein, 5g creatine monohydrate, 1,000mg L-carnitine and 1g of elemental electrolytes per serve.

Directions

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.

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

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

OneFit supplement facts per 35g serve
Energy420kJ / 100kcal
Protein25.0g
Fat, total0.1g
Carbohydrates0.5g (sugars 0.1g)
Creatine monohydrate5.0g
L-Carnitine tartrate1.0g
BCAA (2:1:1)1.05g
Glycine1.0g
Magnesium181mg
Sodium294mg
Potassium139mg
Probiotics (L. paracasei)20 billion CFU
Vitamins & minerals13, 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.

Full supplement facts

L-Carnitine isn’t the new GLP-1.
It’s the part of your metabolism you can actually feed.

1,000mg in every serve of OneFit®, next to 25g of protein and 5g of creatine. One sachet, once a day, after you train.

Try OneFit® Risk-free today

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