Electrolytes and the cognitive blend work fast. Clearer, steadier, from day one.
For Today & Tomorrow
The Complete System
For Performance & Longevity
4.7
842 reviews • 600k+ Customers
Your Whole Stack.
33% Off.
Black Friday Only.
$194 → $129 · OneLife Subscription
- 500mg NMN + resveratrol in one daily serve
- For cellular energy & healthy ageing
- Mixes with water in sixty seconds
Same OneLife. Same 13 actives. 33% off.
TGA-Listed · Made In AustraliaGet 33% Off OneLife
Try It Risk-Free For 90 Days
Black Friday Sale
33% Off. Same OneLife.
Your daily longevity serve, 33% off for Black Friday.
Was $194
Now $129
OneLife™ 30-Serve Jar
$4.30 per serve
- Same Formula
- Same 13 Actives
- 33% Off
As Featured In
Everything In One Serve
13 actives in one TGA-listed daily drink, made in Australia.
Cellular Energy
500mg NMN, the direct precursor to NAD+, the molecule your cells run on.
Healthy Ageing
Resveratrol and CoQ10 to support your cells as you age.
Calm & Focus
KSM-66® Ashwagandha for stress, focus and better sleep.
Hydration
Four types of electrolytes in the same daily serve.
Your Whole Stack Is 33% Off.Black Friday Only.
Trusted by over 600,000+ fitness enthusiasts & active professionals worldwide.
Trusted by 600k+ Customers
OneLife™ Daily Longevity.
13 Active Ingredients For Energy And Healthy Ageing, In One Daily Serve.
4.7
(842 reviews)
- 500mg NMN + Resveratrol
- 13 Active Ingredients In One Daily Serve13 Active Ingredients In One Daily Serve
- For Cellular Energy & Healthy AgeingFor Cellular Energy & Aging Well
Select Plan: Subscription
Save $260/Year With a Subscription
Delivery Frequency
90 Serves | One A Day For Best Results
- 90 Day Refund Guarantee | Cancel Anytime
What’s Included:
Jars
$20FREE1x Premium
Bottle
$35FREE1x Premium
Hat- First Delivery
- Second Delivery
Save on each order- Free Premium Bottle with 1st Order
- Modify and cancel anytime
In Stock | Sold Out 5 Times This Year
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OneLife™
What Is OneLife™?
OneLife is a TGA-listed longevity powder that stacks 13 actives, including NMN, resveratrol, CoQ10, and ashwagandha, into one daily drink.
What Is NMN?
NMN (nicotinamide mononucleotide) is the direct precursor to NAD+, the molecule your cells use for energy production, DNA repair and healthy ageing. NAD+ drops by about half by age 50; OneLife™ delivers 500mg of NMN daily to restore what you are losing.
When Will I Notice The Difference?
Days 1–15: energy and mental clarity improve. Days 15–60: sleep quality and recovery are noticeably better. Days 60–90: the compound effect builds. Most people feel something in the first week — the real shift comes from committing to 90 days.
When Do I Take It?
One scoop into cold water, stirred, in about sixty seconds. Best first thing in the morning on an empty stomach. Coffee afterwards is fine.
Tastes Like
Watermelon
Packed With
-
500mg NMN
-
Trans-Resveratrol
-
CoQ10
-
KSM-66® Ashwagandha
-
4 Electrolytes
-
13 Active Ingredients
By Middle Age, NAD+ Levels Have Fallen By As Much As 50%.
In Other Words, The Molecule Every Cell Needs For Energy, Repair And Survival Disappears.
Soon you begin to experience:
- Fatigue & brain fog
- Weight creeping up
- Cognitive decline
- Slower recovery
- Low motivation
- Low energy
- Poor sleep
What happens after you start OneLife
Some ingredients work immediately. Others take weeks to reach full effect.
NMN is building now — quietly, at the cellular level, before you feel it.
This is the long game. Daily cellular support that keeps paying off years from now.
Tested In The Real World
Join over 600,000 customers who noticed visible results after using OneLife™ for at least 90 days.
I was spending close to $200 a month on NMN, magnesium, CoQ10, and ashwagandha separately. Switched to OneLife™ three months ago and I'm getting better doses of everything in one hit for less money. Should've done it sooner.
Not going to lie, I expected it to taste like grass. It doesn't. Mixed it with cold water, honestly tastes like a light juice. My wife tried it and now she's on the Duo plan. That says enough.
First few days I didn't notice much. By week two I was waking up before my alarm and actually feeling sharp by 8am. Sleep's deeper too I'm not waking up at 3am anymore. Three months in now and I'm not going back.
Came from IM8 was paying over $180 a month for capsules and honestly couldn't tell if they were doing anything. OneLife™ is cheaper, I can actually feel the difference, and it's one sachet instead of a handful of pills. No contest.
I started taking it for energy and focus the perimenopause fog was getting unbearable. Got that within a few weeks. But by month two, people started commenting on my skin. My aesthetician asked what I'd changed. That's when I knew it wasn't placebo.
I'm the guy who thinks most supplements are expensive urine. Bought OneLife™ expecting to claim the refund. By week three I was sleeping through the night for the first time in years. By week six my wife said I seemed like a different person. I've now renewed twice and I don't see that stopping.
My bathroom cabinet looked like a pharmacy. NMN, resveratrol, magnesium, CoQ10, ashwagandha, fish oil, a multivitamin. Seven bottles, $250+ a month, and I'd forget half of them anyway. OneLife™ replaced all but the fish oil. One sachet. Done. My wallet and my countertop have never been cleaner.
I bought the single plan in November. By December my husband kept asking for a sip of mine every morning. We switched to the Duo in January. It's become our morning thing two sachets, two glasses, out the door. Cheaper than our old coffee order too.
Capsules get forgotten. Powders need a scoop and a shaker. The sachet format is genuinely the reason I've stuck with this for 4 months. Tear, pour, stir, done. Airports, hotels, offices doesn't matter. If it wasn't this easy I wouldn't still be taking it.
I took AG1 for a year. Honestly couldn't tell you what it did other than make my pee green. Switched to OneLife™ because of the NMN and resveratrol actual ingredients with actual clinical doses. Felt the difference within two weeks. Wish I'd switched sooner.
I didn't buy this for sleep. I bought it for energy. But the first thing I noticed was I stopped waking up at 3am. Then I stopped needing a coffee before 10. Then my wife asked if I'd been working out because my face looked different. Three things changed from one sachet. Not bad.
Had routine bloods done at month two. Inflammation markers down, vitamin D up, cortisol in range for the first time in three years. My GP asked what I'd changed. I showed her the sachet. She said keep doing whatever you're doing. That was good enough for me.
I've drunk some horrible supplement concoctions over the years. This isn't one of them. Mixed with cold water it genuinely tastes fine; light, slightly citrusy, no chalky aftertaste. My pre-workout tastes worse and costs more. This was a non-issue.
I'm 46 with a 6-year-old and a 3-year-old. I don't have the luxury of slowing down. Started OneLife™ because I want to be sharp and active when they're adults, not just alive. Four months in and I have more energy for them now than I did two years ago. That's all that matters.
4.9
Trusted daily by 600,000+ members.Over 600,000 Success Stories
Us Vs Them
Most longevity products target one benefit. OneLife targets thirteen. In one daily serve.
-
NMN
Included
Included -
Resveratrol
Included
Not included -
CoQ10
Included
Not included
-
Ashwagandha
Included
Not included
-
Electrolytes
Included
Not included
-
13 Actives
Included
Not included
-
Theanine
Included
Not included
-
Vitamins
Included
Not included
- Cost Per Serve $3.48$6.00
“It's about looking at the bioavailability of everything”
“I want to be able to have an impact on people. With FON, It's about looking at the bioavailability of everything, how it all combines together [...] what the format of each ingredient is, how much is going to be absorbed.”
Anna BearparkSenior Medicine Development
Get 33% Off OneLifeWant To Join The 600,000+ Who Replaced Their Supplement Shelf?
Get 33% Off OneLife
Any Last Questions?
Here’s everything you need to know.
What is NMN and why should I care?
NMN (Nicotinamide Mononucleotide) is the direct precursor to NAD+ — the molecule your cells need for energy production, DNA repair, and healthy aging. Harvard researcher Dr. David Sinclair called it "the closest thing we have to a fountain of youth." Problem is, your NAD+ levels drop by 50% by age 50. OneLife™ delivers 500mg of NMN daily to restore what you're losing.
Why do you combine NMN with Resveratrol?
Because they work together. NMN boosts NAD+ levels. Resveratrol activates the sirtuins (longevity genes) that USE that NAD+. Taking NMN alone is like filling a fuel tank with no engine. Taking both is how you actually switch the system on. Most brands sell them separately. We combined them, in one serve.
What does it taste like?
Light, refreshing watermelon. Not "supplement-y." We spent months on flavour because if you hate taking it, you won't stick to the protocol. Most people actually look forward to it.
How do I take it?
One level scoop (8 g) in 250 mL of cool water. Best consumed in the morning. Can be taken alongside your coffee.
When will I feel results?
Days 1-15: Energy and mental clarity improve. The fog lifts.
Days 15-60: Sleep quality and recovery noticeably better.
Days 60-90: The compound effect kicks in — this is where cellular transformation accelerates.
Most people feel something in the first week. The real shift happens when you commit to 90 days.
Why do you push the 90-day commitment?
Because that's what the science demands. NAD+ restoration isn't instant. Cellular repair takes time. The people who "try for 30 days" and quit are stopping right before the compounding benefits hit. The 90-day protocol exists because it works — not because we want your money longer.
Is it safe?
Yes. OneLife is made in Australia at a TGA-licensed facility, and every batch is third-party tested for purity, potency and contaminants. Contains sugars, soya bean products and sulfites. Always read the label and follow the directions for use.
What if it doesn't work for me?
Full refund. No questions. No hassle. Email care@usefon.com or DM us on Instagram. If you don't feel sharper, clearer, and more energised — we give you every dollar back. The only risk is staying the same.
4.7
(842 reviews)
Loved By OneLife Customers
"Not going to lie, I expected it to taste like grass. It doesn't. Mixed it with cold water, honestly tastes like a light juice. My wife tried it and now she's on the Duo plan. That says enough."
Chris R.
Verified Review
"First few days I didn't notice much. By week two I was waking up before my alarm and actually feeling sharp by 8am. Sleep's deeper too — I'm not waking up at 3am anymore. Three months in now and I'm not going back."
Lisa T.
Verified Review
"I started taking it for energy and focus — the perimenopause fog was getting unbearable. Got that within a few weeks. But by month two, people started commenting on my skin. My aesthetician asked what I'd changed. That's when I knew it wasn't placebo."
"I bought the single plan in November. By December my husband kept asking for a sip of mine every morning. We switched to the Duo in January. It's become our morning thing — two sachets, two glasses, out the door. Cheaper than our old coffee order too."
David P.
Verified Review
"Capsules get forgotten. Powders need a scoop and a shaker. The sachet format is genuinely the reason I've stuck with this for 4 months. Tear, pour, stir, done. Airports, hotels, offices — doesn't matter. If it wasn't this easy I wouldn't still be taking it."
"I took AG1 for a year. Honestly couldn't tell you what it did other than make my pee green. Switched to OneLife™ because of the NMN and resveratrol — actual ingredients with actual clinical doses. Felt the difference within two weeks. Wish I'd switched sooner."
Maya A.
Verified Review
"I didn't buy this for sleep. I bought it for energy. But the first thing I noticed was I stopped waking up at 3am. Then I stopped needing a coffee before 10. Then my wife asked if I'd been working out because my face looked different. Three things changed from one sachet. Not bad."
"Had routine bloods done at month two. Inflammation markers down, vitamin D up, cortisol in range for the first time in three years. My GP asked what I'd changed. I showed her the sachet. She said keep doing whatever you're doing. That was good enough for me."
Leah P.
Verified Review
"I've drunk some horrible supplement concoctions over the years. This isn't one of them. Mixed with cold water it genuinely tastes fine — light, slightly citrusy, no chalky aftertaste. My pre-workout tastes worse and costs more. This was a non-issue."
Tom B.
Verified Review
"I'm 46 with a 6-year-old and a 3-year-old. I don't have the luxury of slowing down. Started OneLife™ because I want to be sharp and active when they're adults, not just alive. Four months in and I have more energy for them now than I did two years ago. That's all that matters."
Priya S.
Verified Review
Every batch of First or Nothing products is independently tested for heavy metals, purity, and dosage accuracy to ensure safety and quality.
First or Nothing is independently tested for heavy metals, purity, and dosage accuracy.
Heavy Metals
OneFit®
Passed
--
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Pathogens and Food Safety
OneFit®
Passed
--
View
Allergens
OneFit®
Passed
--
View
Quality and Stability
OneFit®
Passed
--
View
Ingredient Purity (Creatine)
OneFit®
Passed
Nov 2024
View
HASTA Batch Screening (WADA Prohibited Substances)
OneFit®
Passed
HASTA Supplement Screening
View
First or Nothing is independently tested for heavy metals, purity, and dosage accuracy.
Pathogens and Food Safety
OneLife™
Passed
14/10/2025 (Issued 20/10/2025)
View
Quality and Stability
OneLife™
Passed
14/10/2025 (Issued 20/10/2025)
View
Pure NMN Powder Test Results Summary
OneLife™
Passed
14/10/2025 - 16/11/2025
View
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