The shelf
One formula. Everyone.
Dosed for a median that describes no one. If it happens to suit you, that's luck, not design.
Never a default
You were never the average.
You don't accept the default anywhere else that matters. Your supplement shouldn't be the exception, we read your gut and build a formula that could only ever be yours.
Your first month is paid at order.
HYROX World Champions read their gut with nb1. Every formula signed off by our science board.
The default is a stranger
Off-the-shelf assumes a lot about you. All of it wrong.
Every supplement on a shelf is built for an average gut, a person assembled from a spreadsheet who doesn't actually exist. Same strains, same fibre, same dose, shipped to millions of different bodies and hoped for the best. The label says "everyone." Nobody is everyone.
Yours
Built from your reading.
Matched to what your gut actually showed, the exact species, the exact gaps. A formula that could belong to no one else.
You don't settle for the default anywhere else. So we stopped building for the average.
What arrives at your door
What's actually in your formula.
From a library of 125+ ingredients, only the ones your biology calls for, each dosed to your gut reading, health insights and medical questionnaire. Never a default.
One subscription, in place of greens powderprobioticomegamagnesiumadaptogens
Morning protocol · taken with your first meal
Probiotic Capsule 5 strains · AM
Why it's in Leonardo's formula
His Bifidobacteria measured low at 1.3%. These five strains are the ones matched to that part of his reading.
B. longum 1714B. lactis B420B. lactis BB-12L. acidophilus NCFMB. breve BR03+B632
- Omega & Antioxidant Softgel 2 softgels · AM
- Polyphenol Capsule 1 capsule · AM
- Morning Wellness Capsule 1 capsule · AM
Evening protocol · taken before bed
- Magnesium Capsule 300mg · PM
- Evening Wellness Capsule Left out
Evening Wellness was assessed and left out, his analysis didn't warrant it. Nothing is added by default.
The living layer · taken any time of day
Precision Prebiotic Powder 8g · daily
Why this dose
Fibre matched to his gut's fermentation machinery. The same fibre acts differently in different guts, so his is sized to his, not a fixed dose.
Inulin blend · 6gResistant starch · 2g
128ingredients on file
- 19 Live-culture
strains - 16 Prebiotic
fibres - 20 Vitamins &
minerals - 73 Active
compounds
Science-board vettedOnly evidence-backed ingredients make the library.
Your reading typically draws on 15 to 25 of these. Which ones you get, and at what dose, comes from what your gut can actually do. The rest of the library stays on the shelf, never a default.
- Magnesium Mineral
- Lactobacillus rhamnosus GG Live culture
- Vitamin D3 Vitamin
- Inulin Prebiotic fibre
- Turmeric Root Extract Botanical
- Zinc Mineral
- Lactobacillus acidophilus NCFM Live culture
- Psyllium Husk Prebiotic fibre
Nothing here is a default
A formula built around what your gut can actually use.
A shelf formula gives everyone the same strains and the same fibre and hopes for the best. Yours can't work that way. Once we can see what your gut can do, we build one formula for it and nothing else — no two come out the same, because no two readings are. Here's what goes into one, and how every choice gets made.
01First, the basics
The live cultures and prebiotic in your formula, dosed to work as one and decided by your reading.
Live bacteria
Living bacteria you add to the gut, to top up the teams that are running short.
On its own, it washes through.
Prebiotics
The fibre those bacteria feed on. Their food source, nothing more complicated.
Combined
Both together: the exact fibre these strains can use, in the right amount, so they work as one system.
Fed the right fibre, it stays and works.
02The cultures, up close
Living strains, with the evidence to back them.
We do not add generic bacteria. We use strains: specific, named, trademarked versions of a bacterium, each with its own published evidence. Which jobs your formula takes on, and which strains fill them, is decided by your reading. Here is the range, and one job worked in full.
A few of the jobs your reading might call for
One of them, in detail
Rebuild the bifido base
From your sample Added when your bifidobacteria read below their healthy range.
B. animalis lactis BB-12® The anchor. The most-studied bifido strain there is, and the best at feeding the rest of the chain.
If a metabolic angle B. lactis B420
If stress is in the picture B. longum 1714
Your formula includes only the jobs your reading calls for, each one filled exactly like this.
One of them, in detail
Restore the butyrate supply
From your sample Added when the team that fuels your gut wall is producing too little butyrate.
L. acidophilus NCFM® The anchor. Breaks down the right fibre and hands it down the chain to the butyrate makers.
If the acetate base is also low B. animalis lactis BB-12®
Your formula includes only the jobs your reading calls for, each one filled exactly like this.
One of them, in detail
Support the mucus-layer team
From your sample Added when the mucus-feeding team reads low.
L. rhamnosus GG (LGG®) The anchor. Colonises better than almost anything, with over 1,000 studies behind it.
If stress is also in the picture B. longum 1714
Your formula includes only the jobs your reading calls for, each one filled exactly like this.
One of them, in detail
Crowd out an overgrowth
From your sample Added when a group, like protein fermenters, has expanded past its range.
No single strain does it. This job takes a combination:
L. plantarum 299v® out-competes it for food
L. reuteri UALre-16™ a natural antimicrobial
L. casei 431® one of the most-studied live cultures
Your formula includes only the jobs your reading calls for, each one filled exactly like this.
One of them, in detail
Rebuild after antibiotics
From your sample Added when several teams read low at once, often after antibiotics or illness.
A broad reseed, not a single fix:
L. rhamnosus GG (LGG®) re-establishes a foothold in the gut
B. animalis lactis BB-12® rebuilds the bifido base
L. plantarum 299v® restores fermentation capacity
Your formula includes only the jobs your reading calls for, each one filled exactly like this.
One of them, in detail
Add stress support
From your questionnaire Added from your questionnaire, when you report meaningful stress or poor sleep, even if your sample reads well.
L. paracasei Lpc-37® The anchor. The single strain with the most stress-trial evidence, woven into the same blend.
If your reading calls for it a 4-strain live-culture set
Your formula includes only the jobs your reading calls for, each one filled exactly like this.
03Precision prebiotics
A strain we add is only worth adding if we feed it.
Every strain arrives paired with the exact fibre it feeds on. Which fibres, and how much of each, follows how your gut ferments — the same fibre behaves differently in every gut. Generic fibre is a guess. This is matched and measured.
Too littleRight for youToo much
- GOS
- Inulin
- PHGG
- Beta-glucans
Not in your blend Left out because your reading didn’t call for them.
A few fibres, chosen from dozens. Only the ones your strains can actually use, each paired to the strain it feeds and dosed to the range you handle. Too little does nothing, too much brings the bloat. Two people never get the same blend.
We never start with a formula and look for who it fits. We start with your gut, and let it decide what earns a place.
Dr. Polina Novikovanb1 Science The people who won't take the average
You don't win HYROX by guessing. So why guess with your supplements?
The people who reach the top of anything don't accept the off-the-shelf version of it. Tim & Alexander read their gut with nb1, and hold the Men's Pro Doubles World Record: 47:40, London 2026.
Tim Wenisch 2025 HYROX World Champion · Single & Doubles The board behind your reading
Signed off by people who define the field.
Before a formula is made, it's signed off by a member of our scientific board, drawn from microbiome science, gut immunology, nutrition and bioinformatics. We read 200–400 species per sample, and every result is human-reviewed.
How it works
From sample to your first cycle. Here's how it starts.
When you're ready to start the clock, here's how it goes. You pay your first month today and we post your kit first.
- 1
Order your kit
Choose a plan and check out. You pay your first month today, and we post your kit as soon as the payment goes through.
- 2
Read your gut at home
A two-minute sample, sealed and posted back in the same box. Send it back within 30 days, or your plan ends and your first month isn't refunded.
- 3
Your formula begins
We read your sample and build your protocol. Your plan starts from there, posted monthly and recalibrated every cycle as your gut changes.
Not sure yet? Compare Core and Advanced side by side first, no card needed.
See the plans
Two ways to read you.
Both start with your own biology. Core reads your gut. Advanced adds your blood and rebuilds your formula as you evolve. Your first month is paid at order.
Core £94 /mo or £99/mo, monthly · cancel anytime We read your gut and build your formula from it. Start with Core → Most informed Advanced £144 /mo Gut and blood. Your formula rebuilds every cycle from your data. Start with Advanced →
Four months is the minimum cycle, the window biology needs to shift. Prefer no commitment? Core runs month-to-month at £99. Prices shown in GBP; any currency conversion or FX fee is set by your bank.
- First month paid at order
- Cancel after your first cycle
- Reviewed by our science board
Never a default
Stop taking the average. Let your body tell us what you need.
We read your gut, build a formula that's yours alone, and recalibrate it every cycle. There's a four-month minimum, because biology takes that long to shift.
Order your kitYour first month is paid at order. Compare Core & Advanced →
Built from your biology First month paid at order.
Order your kit