You've been sold formulas built for an average person
Your formula doesn't exist before your analysis does.
Measure first. Then a formula built from your biology, made only after we know what it needs.
“When a supplement does nothing, it's rarely the ingredient that was wrong — it's that the strain and the dose were never chosen for you. That's the variable we take out.”
Choose your plan
You pay your first month today.
Your kit ships as soon as your payment goes through. Your next payment comes before your second delivery.
Buying this yourself costs £172 a month.
Every formula is different. This is one member's protocol, priced as separate products.
How we costed this Hide the breakdown
- Probiotic —
- priced against a generic multi-strain blend at a comparable CFU count.
- Omega & antioxidant —
- a high-EPA omega-3 at 1.5g EPA/DHA, plus an astaxanthin and a D3.
- Prebiotic —
- a six-fibre blend, undosed.
- Vitamin & mineral —
- a B-complex, a vitamin C, a zinc, a glutathione and a propolis, at the strengths in the protocol.
- Evening —
- an ashwagandha, an L-theanine and a magnesium bisglycinate at 420mg elemental.
- Gut test —
- a consumer microbiome test at retail.
“You can't buy named probiotic strains as a consumer. They aren't sold, at any price. Matching individual strains to one person's gut is exactly what nb1 does — and that's why I work with them.”
From kit to formula, fully mapped.
- Week 0 Kit ships. Two-minute sample at home, posted back prepaid in the box it came in.
- Weeks 1–2 Sequencing and sign-off. 200–400 species read from your sample, your formula approved by a person before it exists.
- Week 3 Formula approved. Your formula is signed off and goes into production. Your first month is already paid.
- Week 4 Formula ships. 30 days, presorted, blister-packed and travel-ready.
- Advanced
- Week 12 Retest. Same pipeline; the data shows what shifted.
- Week 16 Formula recalibrates. Your next cycle, rebuilt against new data.
“Everything is prompt and they really take care of every aspect of the experience. A reliable company i leave my gut health in the hands of with certainty.” Ramona · kit to capsules, start to finish
The things people actually ask
I've tried supplements before and nothing worked.
Everything you've tried was formulated before anyone knew anything about your gut. This starts from your sample. If your retest shows nothing moved, you'll be the first to know — the data is yours.
Do I actually have to take a stool sample?
Yes. Two minutes, at home, everything in the box, prepaid return. No pharmacy, no appointment. It's the least pleasant part and it's the reason the rest works.
Can I cancel, and what happens to the kit?
Yes. Cancel within 14 days of your kit arriving and send the kit back intact for a full refund. If you've already sent your sample, or you cancel after 14 days, your plan ends but your first month isn't refunded. The same applies if you never send anything back.
Core or Advanced?
Two different products, not two rungs of a ladder. Core reads your gut and builds your formula from it. Advanced reads your gut and your blood, and rebuilds the formula every cycle against both. Pick the one that matches how much you want to know — you can move between them at any point.
How does the analysis work?
Your sample is sequenced to species level — 200–400 species — read against the science board's reference standards, and a formula is drafted and signed off by a person before anything is manufactured.
László Came through a friend, a few weeks in “It works as it was forecasted, already feel more enegetic and my bloating already discontinued.”
Sirko Travels constantly, came for sleep and recovery “The process was straightforward and professional throughout, with no friction anywhere. The results speak for themselves. I feel excellent.”
Ready when you are