4.5 1,000 members

Gut test and daily formula

A one of one formula made from your gut

Built from your own gut reading, out of a library of 96+ scientifically backed ingredients: live cultures, prebiotic fibres, vitamins, minerals and botanicals. Packed into daily morning and evening formats. £99 a month.

  • 40% less bloating
  • 9 in 10 recommend us
  • Analysis and report included
  • Free shipping, every month
  • Free shipping every month
  • Cancel whenever you like
Your plan £99 £3.26 / day

Your monthly formula

  • Activate Morning capsules
  • Nourish Daily powder blend
  • Restore Evening capsules

Included free with your formula

  • £149
  • £29
  • £29
  • £29
  • £69
  • £69
  • £89
Your gut analysis and report
£463£0
Your supplement formula
£99/ mo
Monthly total
£99/ mo
Add to cart

You pay your first month at order, and your kit ships first.

Add to your plan

Recommended
  • First retest at month four, then every six months
  • Every retest kit included, at no extra cost
  • Your formula rebuilt from the new reading, not topped up
  • A finger-prick panel: vitamin D3, homocysteine, omega-3 index, ferritin
  • Doses tuned to what actually reached you, not to symptoms
  • 14-day refund if you return your kit intact
  • Cancel whenever you like
  • Analysis and report included

Beta cohort · first four months

  • 40%better digestion
  • 25%better gut score
  • 9 in 10would recommend us
  • 30%more energy

Digestion, energy and recommendation self-reported by beta members. Gut score measured by retest, not self-reported. Not a clinical trial.

Exclusive access to our scientists and nutritionists

Ask them about your results, your formulation and your nutrition.

  • Dr. Polina Novikova Dr. Polina Novikova Chief Scientific Officer Luxembourg
  • Dr. Marijn Lewis Dr. Marijn Lewis Immunology & gut health Zurich
  • Dr. Irina Utkina Dr. Irina Utkina Bioinformatics Toronto
  • Katia B. Otterstedt Katia B. Otterstedt Clinical research ECLIN
  • Dr. Monica S. Matchado Dr. Monica S. Matchado Bioinformatics TU Munich
  • Dr. Bérénice Hansen Dr. Bérénice Hansen Nutrition & fasting Luxembourg

A scientist signs off every reading. Members reach the team from the app, at no extra cost.

Meet the science board
What is in your formula

Live-culture strains, the prebiotic fibres that feed them, and the vitamins, minerals and active compounds your reading and intake call for. A single formula typically draws on about 35 items from a library of 96+. Nothing is included by default.

See the ingredient library
How it is read and made

Shotgun sequencing at species level in EU laboratories, benchmarked against 8,069 reference guts. Your sample never leaves the bloc. The formula is manufactured in the EU to GMP standard and signed off by a scientist before it goes into production.

What accreditations do you have

Manufacturing runs in EU facilities certified to GMP, the standard that governs how a supplement is made, batched and traced. Sequencing and analysis are carried out by EU laboratories, so your sample never leaves the bloc, and every reading is signed off by a named scientist before a formula is produced. Batch records are available to members on request.

How to take it

Two moments a day. The morning pack with your first meal, the evening pack before bed, and a scoop of the prebiotic powder in water whenever it suits. Everything arrives presorted, so there is nothing to count out.

Billing, shipping and cancelling

Your first month is paid when you order, and later months are charged before each delivery. Shipping is free every month, and the plan is rolling: cancel whenever you like.

What is in it, and what is not

Every item is there because your reading called for it. Nothing is included by default.

Contains

  • Live cultures, dosed to your reading
  • The prebiotic fibres that feed them
  • Vitamins and minerals your intake is short on
  • Botanicals for sleep, stress and digestion
  • About 35 items, drawn from a library of 96+

Does not contain

  • A default multivitamin
  • Off-the-shelf dosing
  • Added sugar
  • Fillers
  • Anything your reading did not call for

What members are saying

  • Ramona

    I had been taking the same four supplements for years without knowing whether any of them did anything. The report was the first time I saw a reason for what I was taking.

    Ramona
  • László

    The bloating I had learned to live with settled in the second month. I did not change anything else.

    László
  • Sirko

    What sold me was that nothing is made until they have read your sample. It is the opposite of every other subscription I have tried.

    Sirko
  • Eugen

    Two packs a day and a scoop of powder. No pill organiser, no counting, nothing to reorder. That is the part I did not expect to value.

    Eugen
Read the reviews

You have tried the usual fixes. Here is why they did not stick.

Most of them start from an average person. None of them start from your gut.

  • Multivitamins

    The same doses for everyone. Much of what you do not need passes straight through, and nothing tells you what you were actually short on.

    Doses set by your own reading and intake.

  • Off-the-shelf probiotics

    A few strains picked for shelf life. Without knowing what already lives in your gut, there is no way to tell whether they are the right ones.

    Strains chosen for the species you are low on.

  • Greens powders

    Dozens of ingredients at doses too small to do much, chosen to fill a label rather than a gap.

    About 35 items, each there because your reading called for it.

  • Generic gut tests

    A long report and no next step. You learn what is in your gut and are left to work out what to do about it.

    Your reading becomes your formula.

  • Elimination diets

    Weeks of cutting foods out, often including the fibres your gut bacteria depend on, with no way to see what changed.

    A nutrition plan that feeds what is missing, and a retest to show it.

  • Blood tests with no follow-up

    Numbers on a PDF, then nothing. Nobody adjusts anything because of them.

    A scientist reads your panel and your doses change with it.

£463 of analysis, included at no cost.

What you get, itemised

  • A full lab test of your gut bacteria£149
  • A simple guide to how your gut works£29
  • Which fibres your gut can digest£29
  • How varied your gut bacteria are£29
  • Why your gut looks the way it does£69
  • A food plan built for your gut£69
  • Personal advice from a nutritionist£89

Bought separately£463

You pay£0

Your formula is drawn from 96+ studied ingredients.

Built in three parts, each a small set of units. Only the ingredients your reading calls for go in, each dosed to your gut. Nothing is a default.

L. rhamnosus GG Galacto-oligosaccharides Ashwagandha Bergamot extract Magnesium Flaxseed oil Turmeric root Inulin
B. lactis BB-12 Partially hydrolysed guar gum Rhodiola Pomegranate extract Vitamin D3 Green tea extract Valerian root Oat beta-glucan
19 × live-culture strains

Includes L. rhamnosus GG, L. acidophilus NCFM, L. plantarum 299v, L. paracasei LPC-37, L. reuteri, B. lactis BB-12, B. lactis HN019, B. longum 1714, B. breve BR03 and S. thermophilus.

13 × prebiotic fibres

Includes galacto-oligosaccharides, inulin, chicory-root FOS, partially hydrolysed guar gum, oat beta-glucan, resistant starch, soluble corn fibre, acacia fibre, psyllium husk and carob bean extract.

21 × vitamins and minerals

Includes vitamin D3, K2, A, C, E, the full B-complex with folate as 5-MTHF and B12 as methylcobalamin, plus magnesium, zinc, iron, selenium, iodine, copper and manganese.

45 × active compounds

Includes ashwagandha, rhodiola, Korean ginseng, bacopa, turmeric, bergamot, pomegranate, apple polyphenols, green tea with L-theanine, quercetin, omega-3 as DHA and EPA, CoQ10, NAC, L-glutamine, valerian, lemon balm, lavender and L-tryptophan.

A single reading draws on about 35 of them Explore the full library →

What Arrives Each Month

Three parts: a morning pack, an evening pack, and one scoop of prebiotic.

  • Activate

    Morning · Pre-packed

    Taken with your first meal.

    • Live strains matched to your gaps
    • Omega and antioxidant softgel
    • Polyphenols and daytime botanicals
  • Restore

    Evening · Pre-packed

    Taken before bed.

    • Magnesium, dosed to your reading
    • Evening botanicals, only if warranted
  • Nourish

    Any time · One scoop

    Any time of day.

    • Fibres paired to the strains they feed
    • Dosed to the range your gut handles

This was the drawer. This is the whole thing now.

A bathroom drawer of assorted supplement bottles and blister packs
Before · the drawer
The open nb1 box: morning and evening blister trays either side of the daily powder blend
After · the whole thing
  • Presorted into AM and PM packs

    No pill organiser, nothing to count, nothing to measure out.

  • Travel-ready

    Tear off the days you need. A weekend or a full month packs flat.

  • Delivered monthly, free shipping

    Your next month arrives before you finish this one. No reordering.

Four steps from your biology to your one-of-one protocol.

From the sample you collect at home to your first delivery takes about four weeks.

Why week 3 matters

3

Nothing is made in advance. Your formula is only made once we have read your results. Built for one. Never for everyone.

  1. Week 0

    Collect

    Take a sample at home. Five minutes.

  2. Weeks 1–2

    Read

    Our lab reads your biology at species level.

  3. Week 3

    Make

    We make your formula from scratch. Only for you.

  4. Week 4

    Deliver

    It arrives at your door, and tops up monthly.

What Is Included, And What Is Optional

The reading, the formula and the report are in every plan. Retesting and blood markers are options you turn on, and you can add or drop either at any point.

Choose your options Retesting arrives switched on.

In every plan

  • Gut reading at species level, benchmarked against 8,069 reference guts
  • A formula built from your data and nothing else
  • The full health report, in plain language
  • Presorted AM and PM packs, delivered monthly, free shipping

Options you turn on

Retesting and blood markers + £50/mo Your gut re-read and your formula rebuilt, plus a finger-prick blood panel.

The plan is £99/mo. Retesting and blood markers are one option, added at £50/mo on top.

What members say

Rated 4.5 / 5 on Trustpilot

  • Ramona RamonaMember since 2025
    Verified

    Finally a reason for what I take

    I had been taking the same four supplements for years without knowing whether any of them did anything. The report was the first time I saw a reason for what I was taking.

  • László LászlóMember since 2025
    Verified

    Bloating settled in month two

    The bloating I had learned to live with settled in the second month. I did not change anything else.

  • Sirko SirkoMember since 2024
    Verified

    Nothing made until they read your sample

    What sold me was that nothing is made until they have read your sample. It is the opposite of every other subscription I have tried.

  • Eugen EugenMember since 2025
    Verified

    Nothing to count, nothing to reorder

    Two packs a day and a scoop of powder. No pill organiser, no counting, nothing to reorder. That is the part I did not expect to value.

It starts with a small sample. A few minutes, at home.

A small stool sample. A few tiny amounts into the tube, nothing more. Private, and done in minutes.

Seal it, and send it back with the prepaid return included in your kit. Everything you need is in the box, and a replacement kit is free if anything goes wrong.

Time at home
A few minutes
What travels
The tube only
Return
Prepaid, included
If anything goes wrong
Replacement kit, free
How to take your sample, step by step →
Kit contents, labelled: kit box, stool collection tube, biohazard bag, stool collection paper and printed instructions

Questions

What is in it?
Live-culture strains, the prebiotic fibres that feed them, and the vitamins, minerals and active compounds your reading and intake call for. A single formula typically draws on about 35 items from a library of 96+. Nothing is included by default.
Where is it made, and to what standard?
Manufactured in the EU to GMP standard, and sequenced by EU laboratories — your sample is not shipped outside the bloc. Every formula is signed off by a scientist before it goes into production.
How do I take it?
Two moments a day. The morning pack with your first meal, the evening pack before bed, and a scoop of the prebiotic powder in water whenever it suits. Nothing to count out or organise.
What it is, and what it is not
It is a supplement formula built from a reading of your own gut. It is not a diagnostic, not a medicine, and not a diet plan. It does not diagnose, treat, cure or prevent disease, and it is not a substitute for medical advice.
Can I ask your scientists a question?
Yes. Seven specialists govern the method and read the results, and you can put a question to them at any point in your plan.
When am I charged?
When you order. Your first month is paid at checkout and your kit ships as soon as the payment goes through. Later months are charged before each delivery.
Can I cancel?
Whenever you like. It is rolling monthly.
What do the two add-ons actually do?
Retesting re-reads your gut and rebuilds your formula from the new numbers, so you can see what moved. Blood markers add a finger-prick panel, so doses land on measured levels rather than on how you say you feel. Either can be added or dropped at any point.
How often am I retested?
Your first retest is at month four, which is the earliest point a gut ecosystem has measurably shifted. After that it settles into every six months, because change past the first cycle is slower and a shorter gap would not tell you anything new. Every retest kit is included.
Do I need to retest?
You do not have to, but it is what makes the subscription worth having, so it arrives switched on. Turn it off and your formula stays built from your first reading.
What is actually in it?
Live cultures and the fibres that feed them, plus the vitamins, minerals and botanicals your reading and intake call for. Drawn from a library of 96+ studied ingredients.
Is the sample difficult?
A small stool sample at home, a few minutes, and it goes back in the prepaid return. A replacement kit is free if anything goes wrong.

Stop guessing. Start with your biology.

You pay your first month today, and your kit ships first. £99/mo, cancel whenever you like.

Add to cart
  • Simple monthly billing

    First month paid at order, then monthly before each delivery.

  • Rolling monthly

    £99 a month, cancel whenever you like. No contract and no minimum term.

  • Analysis included

    The reading and the full report come with the plan, at no extra cost.

A sample report
A sample nb1 report: an overall microbiome score of 85.5, beside the analysis itemised to £463
Your own report is built from your sample, not this one. Open the full report →