1500 mg
Sodium Butyrate
Fuel for the lining
A short-chain fatty acid your gut bacteria make when they ferment fibre. The cells lining your colon use it as their main source of energy.
The gut-lining layer of the Yona system
Gut Barrier+
Four targeted ingredients that support your gut lining directly. Made to sit alongside Vagus One, and gentle enough for sensitive systems.
- Supports the gut lining itself, not just gut bacteria
- Butyrate, S. boulardii, zinc carnosine and immunoglobulins, every dose on the label
- No harsh herbs or aggressive cleansing ingredients
- Designed to complement Vagus One
3 capsules daily90 capsules · 30 days4 ingredients
Weekend offer
Prices below include it. Ends 30 September.
Free UK delivery. Order today, arrives in 2–3 working days.
Real people on WhatsApp: +44 7767 211135
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“Balancing the autonomic nervous system plays a crucial role in gut health. With Yona, I’ve found improvement in many issues like bloating, constipation, diarrhoea and gut-related inflammation.”
4.6/5“Excellent” on Trustpilot
300+verified Yona reviews
4 dosesall on the label, no blends
Doctor-ledclinical advisor, MBChB
Where it fits
Most gut products start with bacteria. Yona works in two layers.
Your gut doesn’t run on its own. The nervous system tells it when to move, digest and settle, mostly through the vagus nerve. Vagus One supports that signal.
Gut Barrier+ is the second layer: direct support for the gut environment the signal arrives at, starting with the lining.
New to Yona? We usually recommend starting with Vagus One and adding Gut Barrier+ when you want more direct gut support. See Vagus One
Layer 1 · Vagus One
The signal
Nutrients for normal nervous system function and the gut–brain connection. The upstream half of the system.
Layer 2 · Gut Barrier+
The environment
Four ingredients for the gut lining, the mucus layer above it and the balance of what lives in your gut.
How it works
Your gut lining is one cell thick.
That single layer of cells is the boundary between what you eat and the rest of you, and your body replaces it every few days. Gut Barrier+ puts four ingredients to work on it, each on a different part.
2250 mg
Saccharomyces boulardii
A beneficial yeast
Not a bacterial probiotic. A well-studied yeast that supports a balanced gut microbiome and a healthier gut environment.
375 mg
Zinc L-Carnosine
Protection for the lining
Zinc bound to carnosine, a form known for adhering to the gut lining, where it supports the mucosa and the joins between cells. Zinc contributes to the normal function of the immune system.
41,000 mg
Serum-Derived Bovine Immunoglobulin
Binds what shouldn’t be there
Concentrated IgG proteins that bind bacteria, toxins and other unwanted substances inside the gut, before they reach the lining.
Supplement Facts
Serving size 3 capsulesServings per pouch 30
| Amount per serving | Dose |
|---|---|
| Sodium Butyrate | 500 mg |
| Saccharomyces boulardii | 250 mg |
| Zinc L-Carnosine | 75 mg |
| Serum-Derived Bovine Immunoglobulin | 1,000 mg |
Other ingredients: acid-resistant HPMC capsule, bamboo-derived silica (natural flow agent).
Full transparency
Four ingredients. Nothing hidden.
No proprietary blends and no filler list. Every active ingredient is on the label at its full dose.
What’s not in it
- No harsh herbs or antimicrobial “cleanse” blends
- No proprietary blends that hide doses
- Not suitable for vegans or vegetarians: contains bovine-derived immunoglobulin
How to take: 3 capsules a day with food. Sensitive systems can start with fewer and build up over the first week.
The difference
Why not just take a probiotic?
Probiotics add bacteria. Cleanses try to clear things out. Gut Barrier+ supports the lining those bacteria live against.
| Gut Barrier+ | Typical probiotic | Herbal gut cleanse | |
|---|---|---|---|
| Works on the gut lining itself | Yes | Not the focus | No |
| Fuel for lining cells (butyrate) | 500 mg | No | No |
| Beneficial microbe | S. boulardii (yeast) | Bacterial strains | No |
| Gentle on sensitive systems | No harsh herbs | Varies | Often strong antimicrobial herbs |
| Every dose on the label | Yes | Varies | Often proprietary blends |
| Built to pair with nervous-system support | Vagus One | No | No |
Honest fit
Is Gut Barrier+ right for you?
It’s a good fit if you…
- Already take Vagus One and want more gut-focused support
- Want something broader than a probiotic on its own
- Prefer a gentle approach without harsh herbal blends
- Are building a longer-term digestive routine
It’s probably not for you if you…
- Want an overnight fix
- Are looking for an aggressive cleanse, detox or antimicrobial protocol
- Need a vegan or vegetarian product
- Expect a supplement to replace medical advice or treatment
Your first 12 weeks
Built for consistency, not a quick fix.
The lining renews itself continuously, so steady daily support matters more than any single dose. Here’s what the routine looks like.
Week 1
Start gently
Take with food. If your system is sensitive, begin with fewer capsules and build up to 3 a day.
Weeks 2–4
Build consistency
Same meal, every day, alongside Vagus One. Consistency is what the routine runs on.
Weeks 5–8
Support the environment
Keep going. This is where daily support for the lining and gut balance adds up.
Weeks 9–12
Continue your routine
Finish the full 12 weeks, then decide whether to keep it as ongoing support.
3 pouches cover the full routine at £36.00 a pouch, which works out to £1.20 a day.
Who’s behind it
Shaped by a doctor and a gut health nutritionist.
Dr Alisha Damani
MBChB · Clinical Advisor
An award-winning medical doctor specialising in autonomic nervous system function and its effect on digestive health. Alisha makes sure Yona’s approach reflects how symptoms actually present in practice, especially stress-driven and treatment-resistant gut issues.
David McCollum
Cert Nat ANP · Clinical Nutritionist
A certified gut health practitioner with over 25 years in clinical nutrition. David specialises in complex digestive dysfunction and targeted nutrient repletion, drawing on casework with patients who haven’t responded to conventional approaches.
Real customers
What people say about Yona.
4.6/5 Excellent
Trustpilot reviews
“Huge improvement in all symptoms.”
“I didn’t think this would work. I was very suspicious. However after 6 weeks I am much more settled and don’t have the gut issues and can now confidently leave the house.”
“I have been taking Yona Gut Repair and Vagus+ for a month now and am starting to see some improvements.”
“Delighted with results and the excellent support and information I have had from the company.”
“At last something that makes a difference. Been using for three weeks now and gut issues much improved.”
“So far so good. Three weeks in and things are really improving. Interested to see where 12 weeks takes me.”
Reviews and videos come from customers across the Yona range. Individual experiences vary.
FAQ
Questions, answered.
Can’t see yours? Message the team on WhatsApp, 7 days a week, or email hello@meetyona.co.uk.
Chat on WhatsAppHow is Gut Barrier+ different from Vagus One?
Vagus One is the foundation of the Yona system. It supports the nervous system and the gut–brain connection, the upstream signal.
Gut Barrier+ works more directly on the gut environment itself: the lining, the mucus layer and the balance of what lives in your gut.
Do I need both?
Not always. If you’re new to Yona, we usually recommend starting with Vagus One. Gut Barrier+ is best for people who want additional, direct gut support alongside it.
Is Gut Barrier+ a probiotic?
No, it isn’t a standard probiotic. It contains Saccharomyces boulardii, a beneficial yeast, alongside sodium butyrate, zinc L-carnosine and serum-derived bovine immunoglobulin.
How do I take it, and how long does a pouch last?
Take 3 capsules a day with food. Each pouch holds 90 capsules, which is 30 days. If your system is sensitive, start with fewer capsules and build up over the first week.
When should I expect to notice a difference?
Gut Barrier+ is designed to be taken consistently as part of a 12-week routine. Support for the gut environment builds gradually, so we suggest judging it over the full 12 weeks rather than the first few days. Everyone’s experience is different.
Is it vegan or vegetarian?
No. Gut Barrier+ contains serum-derived bovine immunoglobulin, so it isn’t suitable for vegans or vegetarians.
Can I take it with medication, including PPIs?
If you take medication, have a medical condition, are pregnant or breastfeeding, or are under medical supervision, speak to your doctor or pharmacist before using any supplement.
Gut Barrier+ isn’t a replacement for medication. Don’t stop or change prescribed medication without medical guidance.
Where do you deliver and how long does it take?
We ship from the UK with Royal Mail or Yodel. Standard UK delivery is free and takes 2–3 working days. Express next-working-day delivery is available at checkout for orders placed before 12pm.
Verified
Reviews from Yona users.
Every verified review left across the Yona range. Gut Barrier+ is the newest product in it, so most of these are from people using the formulas it was built to sit alongside.
Gut Barrier+
Give your gut lining its own layer of support.
Four ingredients at full, labelled doses, made to work alongside Vagus One. Start with the full 12 weeks for £1.20 a day.
