Daily nutrition for your body's off switch.
New to the vagus nerve? It's the nerve that tells your body the day is over: slow down, digest, recover. When it struggles you feel it as wired nights, a stomach that knots under stress and sleep that doesn't count. Vagus One supplies what it runs on.
The 20-second version ↓
“My general regulation — nerves, stomach, sleep — have all improved.”
Jules Z · Verified reviewNine actives. Per 2 capsules:
Other ingredients: a vegan HPMC capsule, and nothing else. No microcrystalline cellulose, no magnesium stearate, no silicon dioxide.
We recommend starting with one capsule a day for the first five days, then moving up to the standard daily dose of two. The gentler start gives your nervous system time to adjust.
New to the vagus nerve? Read our guide to what it does and how to support it.
Nine actives, independently tested for purity and potency before every batch ships.
Dispatched from the UK with Royal Mail or InPost. Estimated delivery is usually within 2–3 days of dispatch. There is an option for expedited shipping at checkout.
Any questions, message us on WhatsApp or email hello@meetyona.co.uk.
The 90-Day Promise (the Off-Switch Plan). Your 90 days start the day your order arrives. If nothing has changed after taking it every day for the full 90 days, email hello@meetyona.co.uk between day 90 and day 120 and we'll refund what you paid for that supply. No questions to answer and nothing to send back. On a subscription, skip or cancel your next delivery before it bills if you plan to claim.
noticed less brain fog and felt sharper
reported better digestion
had more energy through the day
felt calmer and less reactive to stress
Yona customer survey, 2026, self-reported. Individual experiences; results vary. Food supplements are not a substitute for a varied diet or prescribed medication.
It's called the vagus nerve, and most people have never heard of it. It runs from the base of your brain to your lungs, your heart and your gut, and it's talking to all of them, all day.
It's one long nerve.From the base of your brain to your gut. The longest cranial nerve in your body.
It's your off switch.Your body switches on when life asks. This nerve tells it the moment has passed: slow the heart, digest the meal, repair overnight. Scientists call it rest and digest.
When it struggles, you feel it everywhere.On edge at 11pm. Bloated in a deadline week. Eight hours that feel like four. Not separate problems.
Not four problems. One switch.
Read the full guide to the vagus nerveSee what the vagus nerve does there.
Every “stand down” signal your vagus nerve sends is carried by one chemical messenger. It's built from two pieces.
Energy joins the two pieces into one messenger. Your body has to keep doing this, all day.
The messenger carries the signal, and the switch flips off. Your body can only send what it can make.
Vagus One gives your body both pieces, and the energy to put them together.
Scientists call the messenger acetylcholine
Supplies what firing runs on.
Per 2 capsules30 servingsVegan capsule
The energy to keep sending.
Nutrients selected around normal nervous-system function and neuronal energy.
Both pieces of the messenger.
Built around the nutritional biology involved in acetylcholine signalling.
A calmer baseline, without sedation.
Human-studied bioactives selected around calm, the stress response and resilience.
Nine ingredients, each chosen from peer-reviewed research for a defined role. Every ingredient, every dose, every reason.
Explore the science behind Vagus One
Most capsules are bulked out with fillers and kept running through the machine with flow and anti-caking agents. Ours hold the nine actives, at full dose, in a plant-based shell. That's all.
Made in a GMP-certified facility
You may already use some of these. They can all be useful. Here's what each one is actually built to reach.
From 1,000+ reviews
“Ten years of gut issues… I’ve tried a lot of different things over the years, and there’s only a handful that I can say made a tangible, measurable difference. The longer I take it, the better I feel.”
“I was skeptical that this product could support me, but on reflection my general regulation — nerves, stomach, sleep — have all improved and I’ve felt supported.”
“I have been taking these capsules for a few months to try and stop my excessive burping and after the second/third bottle I realised I’d virtually stopped burping completely. I’ve had this problem for YEARS.”
“Before I started taking Yona I would get upset very quickly, now I am more relaxed. I also have more motivation to do things where before I couldn’t be bothered.”
“Great product that reduced my acid reflux massively. It took a few months, but I’d had it for years.”
“The best thing is being able to sleep without the fear of waking up with reflux, and to be able to have a meal and not panic about feeling uncomfortable afterwards.”
“After suffering fatigue and erratic bowels for weeks after a really aggressive gut bug, Yona really aided recovery… support and reassurance that symptoms would recover in time.”
“I have been using Yona for 4/5 months now and noticed a difference not only in my reflux but my day to day feelings.”
“Within the first week I felt a massive difference and have continued using these daily. I have less bloating… Feeling a lot calmer too.”
“I was suffering from acid reflux very often, sometimes I was choking in the middle of the night… I can eat anything I want without thinking about acid reflux. My digestion feels better.”
“I have been taking it for nearly a month and I can feel the difference… less bloating, and don’t seem to get any acid indigestion.”
“My symptoms have definitely improved. I’m now symptom free for the majority of the time… Don’t expect a fast cure but I do think it helps.”
Reviews from Yona customers, including Vagus+, the formula Vagus One grew out of. Trimmed for length where marked; otherwise in the words they were written in.
Previously called Vagus+ — the formula Vagus One grew out of.
Nervous-system nutrition is a daily practice, not a quick fix. Vagus One is designed to be taken every day, which is why the Off-Switch Plan is 90 days, backed by the 90-Day Promise.
Days 1–5 1 capsule with a mealFrom day 6 2 capsules, same mealTip Open one into food or a drink
Laying the foundation.You're supplying raw materials, not taking a sedative. The only job is not missing days.
The evening goes first.Where people notice something, it tends to show up at night. 64% of those who noticed a change did so within four weeks.
It stops being a decision.The capsules are part of a meal, not a task. What changes tends to arrive as a new baseline, not an event.
A settled routine.A pattern that took years to set doesn't shift in three weeks. Ninety days gives a daily routine time to become your baseline, and it's covered by the 90-Day Promise.
Dr Alisha DamaniMBChB · Clinical advisorSpecialises in autonomic nervous system function and its effect on digestive health, the exact biology Vagus One is built around. Her role is the reality check.
David McCollumCert Nat ANP · Clinical nutritionistTwenty-five years in clinical nutrition, working in complex digestive dysfunction and nervous-system recovery. He brings the casework.
Sana MisraAdvisor · Former NHS doctorAs a doctor in the NHS she kept seeing the same pattern: digestion that changed with stress, sleep that fell apart when people couldn’t unwind. That question led to Yona.
Developed with a medical and clinical advisory team spanning medicine and nutrition.
The vagus nerveWhat it does, the signs it's struggling, and how to support it.
→Signs of low vagal toneWhat it feels like day to day, and what actually helps.
→11 ways to stimulate it, comparedBreathing, cold, devices and more, ranked by the evidence.
→The vagus nerve and digestionHow your gut and brain talk, and why stress lands in your stomach.
→Pause or skipPush a delivery back or skip it. Your price doesn't change.
Cancel in one clickNo minimum term, no fee, nobody to persuade.
Or don't subscribeBuy a single supply. Subscribing is a discount, not a requirement.
Still unsure? WhatsApp us or email hello@meetyona.co.uk.
No. Breathwork, cold and devices stimulate it: they ask it to fire. Vagus One is nutrition. It supplies nutrients and bioactives selected around the biology the nerve runs on. Stimulation is one layer; nutrition is another, and we'd rather you did both. Compare the 11 stimulation methods.
Over a century of nervous-system science, curated into one formula. Every ingredient was chosen from peer-reviewed research, more than 40 studies in all, and each has a defined role across Nerve, Signal and State. Explore the science.
People who recognise the feeling: “My body struggles to switch off.” Tired but still on, stress-reactive digestion, restless evenings, sleep that doesn't restore. A body that's very good at switching on, and struggles to switch back. Read the signs of low vagal tone.
Magnesium is in it: 60 mg, as bisglycinate. But it's one of nine. Vagus One pairs it with the B-vitamin, choline and calm-state layers, rather than relying on one ingredient alone. If magnesium on its own already helps you, that's a reason to expect more here, not less.
Most capsules carry microcrystalline cellulose, magnesium stearate and silicon dioxide: a filler, a lubricant and an anti-caking agent. They make manufacturing faster. They do nothing for you, and early research has started asking questions about them, silicon dioxide and the gut in particular. Vagus One has none of the three: nine actives in a vegan capsule, and nothing else.
Neither. There's no melatonin, valerian or caffeine. It's a daily foundation, not something that knocks you out or gives you a buzz. The State layer, L-theanine and saffron, is there so it never feels like a stimulating nootropic.
Most people who notice a change feel it within the first three to four weeks, usually in the evening first. It builds from there, which is why Vagus One is designed as a 90-day routine, and your first 90-day supply is backed by the promise.
Take it gradually: one capsule a day for the first five days, then two when you're ready. You can also open a capsule into food or a drink. If you're unsure at any point, message us.
Ask your doctor or pharmacist first, particularly if you take prescribed medication, are pregnant or breastfeeding, or have an existing condition. Take the bottle with you. Never stop or reduce prescribed medication because you've started a supplement.
The 30-day arrives monthly, the 90-day every three months. It's cheaper because a predictable order costs us less to fulfil. There's no minimum term: pause, skip or cancel from your account, without emailing anyone.
Dispatched from the UK with Royal Mail or InPost, usually within 2–3 days, with expedited shipping available at checkout.
It comes by email the day your Off-Switch Plan ships: our one-page guide to the 3 wind-down habits worth keeping (and permission to drop the rest), and what to expect week by week across your 90 days. Nothing to buy, nothing to cut out. It comes with both 90-day options.
A 90-day programme for Off-Switch Plan members, built around your evenings: short, practical tips at the moments that matter, with a real person checking in with you at weeks 2, 6 and 12.
A clinical nutritionist from the Yona team, 6 days a week. A real person, not a bot. Ask about how to take Vagus One, food, timing and your routine. They don’t diagnose or change anything you’ve been prescribed. The number comes in your welcome email, with both 90-day options.
Not while you stay subscribed. The price you start the Off-Switch Plan at is the price of every delivery after it, even if our prices change later. If you cancel and come back, you’d pay the price at that time.
Vagus One
Free with 90 days: the guide, week by week, and a nutritionist on WhatsApp.
From 1,000+ reviews.
Nothing changed after 90 days? One email gets every penny back.
£28a month · £84 every 3 months · cancel anytime
