Simply, Build Lean Muscle

Premium sourced, made in-house, one sachet.

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For Performance

OneFit®

31-in-1 daily multi-supplement

Clinical doses, Full Transparency
One Product, Replace Your Stack
Pharmaceutical-grade Quality

For Longevity

OneLife

NMN Daily longevity Blend

1g NMN + 1g Resveratrol
Anti-Aging From The Inside Out.
The Only Aus-Made NMN Blend

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The supplementation industry is broken

The Fragmentation Problem

reason One

Built to Close the Gaps—Automatically

The average supplement buyer juggles 5-7 products. Different brands, different doses, half-empty tubs cluttering your shelf. The industry profits when you buy more. We built FON so you'd need less. One Serve. Everything dosed. Done.

combined into a single post-training ritual.

The Trust problem

reason two

Radical Transparency. Zero Fillers.

64% of NMN products tested on Amazon contained less than 1% of what's on the label. The supplement industry runs on blind faith. FON runs on third-party testing, published results, and clinical doses you can actually verify.

No proprietary blends. No filler systems.

The hype Problem

reason three

One Formula. One Decision. Done.

Celebrity endorsements. Miracle claims. Zero accountability. The industry sells you feelings, not formulas. We publish every ingredient, every dose, every test result. Because if a brand won't show you proof, they don't have any.

One Serve. One habit.

We don’t do half-measures

First Or Nothing isn’t a name. It’s a standard.

Source Verified

Every raw ingredient is traced to its origin, vetted for purity, and retested on arrival. Pharmaceutical-grade NMN. Hydrolyzed collagen. The same creatine form used in 700+ published studies.

64% of NMN Products Tested on Amazon Were Fake. Ours isn’t.

64%

*Full Certificates of Analysis available on every product page.

Science First

Every ingredient is clinically dosed, third-party tested, and backed by peer-reviewed research. If it's in the formula, it's there to work.

5g creatine monohydrate increases strength by 8% in clinical studies*

*Every ingredient disclosed. Every dose listed.

Transparency

Every gram disclosed. Every source published. Every certificate public. If a brand hides behind proprietary blends, they're not being transparent. They're hiding something.

Third-party tested for 250+ banned substances per batch.

250+

*Every ingredient disclosed. Every dose listed.

Results-Driven

We're not selling hope in a jar. We're selling bioavailable ingredients at doses that move the needle on recovery, energy, and longevity.

67.9% of customers reorder within 60 days.

67.9%

*Based on survey of 485 Australian customers, Jan 2024-Jan 2026

Explore Our Products

How It Works

Every Ingredient Has Been Clinically Proven

OneFit

OneLife

Lean Muscle Support

25g Collagen Protein

View The Research

Strength & Endurance

5g Creatine Monohydrates

View The Research

Instant Hydration

1g Electrolytes

View The Research

Fat Oxidation

1g L-Carnitine

View The Research

Daily Defense

17 Vitamins & Minerals

View The Research

NAD+ Restoration

1g NMN Pure

View The Research

longevity support

1g Resveratrol

View The Research

Energy production

200mg CoQ10

View The Research

Cellular hydration

Full Spectrum Electrolytes

View The Research

Absorption Support

MCT oil

View The Research

Our Team of World‑Class experts

Anna Bearpark

Former Head of Product Development at BioCeuticals and Blackmores, with leadership roles on flagship formulations including ArmaForce.

Winnie Yeng Zeng

Senior Formulation Scientist and Head of Efficacy, responsible for clinical dosing strategy, ingredient synergy, and outcome validation.

Martin Lindley

Research Director at UNSW Australia, leading evidence-based formulation and applied nutrition research.

Dr. Kate Harmsen

Integrative Health Practitioner with a Master’s qualification, specialising in whole-system health, recovery, and performance optimisation.

Jennifer May

Clinical Nutritionist and Director of Food Intolerance Australia (2020–2026), specialising in digestive health and dietary intervention.

Dr. Jessica Povall

Doctor specialising in concussion management and clinical neurology.

Nathan Harrington

BSc-qualified Head of Production, overseeing formulation integrity, manufacturing, and quality control.

Third-party lab tested — every batch.

Australian Made. Premium Ingredients.

No gums, oils, or harmful additives.

A customer story | 11 Months with First or nothing

"6 Products. 3 Brands. Zero Results. One Switch Changed Everything.”

I'm 39. I've trained seriously since my twenties. Around 36, something shifted. Recovery took longer. Energy dropped off a cliff by 2pm. Brain fog I couldn't explain. I figured I just needed more supplements.

So I stacked. Protein, creatine, greens, collagen, electrolytes, a multivitamin. Six products, three different brands, $430 a month. Half the time I'd skip the greens because I was rushing. I was spending more and feeling less.

OneFit replaced five of those in one scoop. That alone changed my mornings. But what surprised me was how much better my training felt within a few weeks. Recovery was noticeably faster. I stopped dreading afternoon sessions

Then I looked into OneLife. I'd been curious about NMN but didn't trust what was out there. When I saw FON's third-party testing and the actual dosing, I added it. Four weeks in, the brain fog was gone. Not reduced. Gone. My sleep quality improved. At 39, I genuinely feel sharper than I did at 34.

Two products. One Routine. That's It.

Mark. R, 39 OneFit & OneLife 11 Month Subscriber

90-day member

Amy K. (61)

“Finally look and feel like I'm taking care of myself. One scoop, no pills, actual results.”

90-day member

Amy K. (34)

"A) tastes great, b) gives me 1g NMN and resveratrol in one easy sachet. Saving me thousands a year"

90-day member

Jack. W (64)

“Apart from the fact that I genuinely feel younger... my skin and my body look younger and tighter!”

90-day member

Leah T. (37)

“My partner noticed before I did. 'You seem less stressed.' Then I checked my sleep data. He was right.”

try it, if you don’t love it... we’ll refund every cent.

90-day money back guarantee

Cancel or pause anytime

free shipping to AU, USA, NZ & UK

Lock In My Subscription

Join 50,000+ members who’ve made the switch

Lock In My Subscription

Join 50,000+ members who’ve made the switch

see which is right for you

OneLife/OneFit

Protein

Creatine

Probiotics

L-Carnitine

Electrolytes

NMN

Resveratrol

CoQ10

Ashwaghanda

MCT oil

magnesium

Vitamins & minerals

Vitamin K2

For Performance

For Longevity

For Recovery

For Energy

For Hydration

For Clarity

Calories

OneFit®

25g

20Bn

100

OneLife®

500g

1000mg

200mg

300g

Click To Expand

Try It RiskFree

Your Move. pick Your product.

OneFit®

performance Handled

OneLife®

Longevity Done

Start My Transformation

90-day member

Olivia S. (45 years)

“Three months in and I’m still consistent, resting so much less, and feeling leaner. My BF is on it too now.”

90-day member

Kate. B (52 years)

“My joints feel much stronger and I don’t wake up as stiff. It’s simple, and worth staying consistent with. I will stick to it.”

90-day member

Laura.K (34 years)

“Didn’t change my training - just added OneFit. Feel more consistent. no bloating or crashes throughout the day.”

90-day member

Adam W. (41 years)

“I told myself I’d reassess at three months. I didn’t cancel... I doubled down. It works, it’s simple, and it’s earned its place.”

90-day member

Luke B. (38 years)

“I train hard and expect results. Weight is noticeably leaner and I’m not carrying fatigue into sessions anymore.”

90-day member

James T. (38 years)

“I’m picky with supplements. This one made sense on paper, and delivered in use. It actually does what is says.”

Start My Transformation

90-day member

Amy K. (61)

“Finally look and feel like I'm taking care of myself. One scoop, no pills, actual results.”

90-day member

Amy K. (34)

"A) tastes great, b) gives me 1g NMN and resveratrol in one easy sachet. Saving me thousands a year"

90-day member

Jack. W (64)

“Apart from the fact that I genuinely feel younger... my skin and my body look younger and tighter!”

90-day member

Leah T. (37)

“My partner noticed before I did. 'You seem less stressed.' Then I checked my sleep data. He was right.”

Everything You Need to know

You’ve got questions?

Here’s everything you need to know.

What's the difference between OneFit and OneLife?

OneFit is your daily all-in-one performance blend. It replaces your protein, creatine, collagen, magnesium, electrolytes, and 16 vitamins and minerals in a single serve.

OneLife is our NMN longevity formula, designed to support cellular energy, recovery, and long-term healthspan.

Many of our customers start with OneFit and OneLife as part of their complete health routine.

I already take protein and creatine. Why would I switch?

OneFit contains clinical doses of both, plus collagen, electrolytes, and vitamins you're probably buying separately.

Most customers switch from 5-7 products and save over $150/month. Same ingredients, fewer tubs, one routine that actually sticks.

I don't train hard. Is OneFit still for me?

Absolutely. OneFit isn't just for athletes. The collagen, b-vitamins, creatine, and electrolytes support energy, skin health, gut health, and daily recovery whether you train 7 days a week or just want to feel better with one simple habit each morning.

How do I know your NMN is real?

Every batch of OneLife is third-party tested for purity and potency, and we publish the results. 64% of NMN products tested on Amazon contained less than 1% of what was on the label. We exist because that's unacceptable. You can view our testing certificates on the OneLife product page.

What does it taste like?

OneFit comes in Choc, Vanilla or Trop Crush. It's designed to taste good mixed with just water, no blender needed. If you're unsure, our promise guarantee allows you to swap flavours anytime

How long before I notice results?

With OneFit, most customers notice improved energy and recovery within the first 1 week.

OneLife works at the cellular level, so expect sustained energy, better sleep quality, and improved mental clarity within 2-3 weeks of consistent daily use.

This isn't a stimulant. It's compounding.

Is it worth the price?

The average supplement user spends $190-310/month across multiple products.

OneFit replaces five of those for a fraction of that cost. When you factor in what you're no longer buying, most customers actually spend less with FON than they did before.

Can I take OneFit and OneLife together?

Yes, they're designed to work together. OneFit covers your daily performance nutrition. OneLife supports cellular health and longevity from a completely different angle.

Together, they're the full FON routine. Most customers take OneFit in the morning and OneLife with breakfast. Ease into it to avoid minor GI discomfort.