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How it works The science Reviews Results FAQ Start tonight
A woman at her bathroom mirror
For people who brush, floss and scrape, and still check

Bad breath comes back hours after you brush. Because brushing was never the problem.

The smell does not start on your teeth. It starts with the bacteria that take over your mouth overnight. Virae is a nightly oral probiotic lozenge that re-seeds the good bacteria while you sleep, so the smell has nothing to grow from.

Start tonight How it works
★★★★★ 1,200+ reviews BLIS K12 & M18 60-day money-back

Sound familiar?

  • White tongue by lunchtime
  • A bad taste that creeps back after you brush
  • Floss that smells
  • Mints that wear off in twenty minutes
  • Morning breath that never fully lifts

If a few of those sound familiar, it isn't a hygiene problem. The balance of bacteria in your mouth has tipped — and scrubbing the surface doesn't change it.

Why this happens

You do everything right. A couple of hours later, it's back.

It's the same shape for almost everyone. You do everything right, and a couple of hours after you brush, it's back. A film on your tongue by mid-morning. A taste no rinse touches. A partner who asks if you've had coffee when you haven't.

Maybe it crept in slowly. Maybe it followed an illness or a stressful stretch. Either way, you have tried to out-clean it. You brush, floss, scrape and rinse, and keep mints in every pocket. You've even seen a second dentist, who says your teeth are fine, which somehow makes it worse. If my teeth are fine, then what is it?

You've organised your whole day around a smell you cannot even see.

Underneath it all is the part nobody says out loud. The calculation. The half step back in conversations. The "I'll just check" before you lean in. There is a reason none of it worked, and it is not the one you think.

The real cause

Your mouth is an ecosystem, not a surface

Around 700 species of bacteria live in your mouth. When the wrong ones get the upper hand, they release the sulfur compounds behind the smell, the coating and the stale taste. Brushing cleans the surface. It does not change which bacteria are winning.

The word that matters is balance. A fresh mouth is not a sterile one. It is one where the good bacteria keep the trouble-makers outnumbered.

~700
species of bacteria live in your mouth
85%
of chronic bad breath starts in the mouth, not the stomach
1
nightly lozenge is the whole routine

Once you see it that way, every fix you've tried fails for the same reason.

  1. 1

    Brushing cleans the surface. It barely touches which bacteria run the ecosystem underneath.

    Surface only
  2. 2

    Mouthwash does not aim. It clears the good bacteria with the bad, and the most aggressive ones reclaim the empty ground first. That is why breath can feel worse a few hours after a strong rinse.

    Kills the good too
  3. 3

    Mints and gum are a costume. A louder smell over the real one for twenty minutes. You already know this.

    A 20-minute mask
  4. 4

    Gut probiotics are built to survive your stomach and open in your gut. They skip your mouth entirely.

    Wrong place
  5. 5

    Antibiotics, the thing that may have started it, clear bacteria indiscriminately. What grows back is not guaranteed to be the balance you had before.

    Resets the balance
The 10-second test

Lick the back of your hand. Let it dry for ten seconds. Smell it. That is roughly what the tongue coating produces all day, and why mints never feel like enough. It is not on your breath. It is on your tongue.

The shift

Stop scrubbing. Start re-seeding.

A Virae lozenge held between two fingers

In the late 1980s, a microbiologist in New Zealand studied the people who never get bad breath, the ones with naturally fresh mouths, to find what they had that everyone else did not.

The answer was a friendly strain: Streptococcus salivarius K121In a controlled study, most people taking S. salivarius K12 saw a substantial drop in the volatile sulfur compounds behind oral malodour, versus placebo.Burton et al., Journal of Applied Microbiology, 2006View the BLIS clinical studies. Fresh-mouthed people had it in abundance. Chronic sufferers did not. A sister strain, M182In clinical trials, S. salivarius M18 has been associated with reduced dental plaque and gum bleeding.Burton et al., 2013; randomised controlled trial, Nutrients, 2023View the BLIS clinical studies, did the same work around the gums.

So the fix is not another weapon to kill bacteria. It is to re-seed the good ones, so the smell has nothing to grow from. And timing matters: overnight your saliva drops and the odour-causing bacteria multiply, which makes bedtime the single best moment to put the good ones back to work.

The research behind the strains
  1. 1S. salivarius K12 and oral malodour. Burton JP et al., Journal of Applied Microbiology, 2006. blis.co.nz/clinical-studies
  2. 2S. salivarius M18 and oral health. Burton JP et al., 2013; randomised controlled trial, Nutrients, 2023. blis.co.nz/clinical-studies

Links point to published research on the BLIS K12 and M18 strains, hosted by BLIS Technologies. Food supplement. Statements reference research on the strains and are not a promise of individual results.

4.8★★★★★
1,200+ verified reviews
Licensed BLIS strains (NZ)
Only UK lozenge with both strains
What to expect

The honest 90-day arc

We will not pretend this is a quick fix. It works on the bacterial balance, so it builds over weeks, not overnight. The 90-Day Makeover exists for exactly that reason: long enough for the change to take hold and turn into a habit you keep.

Tonight

One lozenge, after you brush

  • Let it dissolve. The whole habit takes about a minute
  • The live strains settle onto your tongue, gums and throat while you sleep
The first week

The mornings start to change

  • Most people notice the mornings first: the coated feeling and stale taste begin to ease
  • You stop reaching for a mint after lunch. Some weeks feel further along than others, and that is normal
Weeks 2 to 4

You stop checking

  • The balance starts to hold, not just at night but through the day
  • You lean into a conversation without the running calculation in the back of your head
Your full 90 days

It just becomes your routine

  • Fresh breath stops being something you manage and becomes something you have, the way a clean mouth comes from brushing
  • This is the whole point of the makeover: enough time for the change to take, and to stay

Be honest with yourself: this is a lifestyle change, not a one-off. You keep it the way you keep brushing, and that is exactly why it finally holds when the quick fixes never did. Based on what we see across 1,000+ reviews; everyone's mouth is different.

The Overnight Rebalance

Two good bacteria. One nightly habit. While you sleep.

Overnight your saliva slows and the odour-causing bacteria multiply. That is exactly when Virae goes to work, crowding them out in the place they actually live.

A lozenge, not a capsule

It dissolves slowly so the live strains make direct contact with your tongue, gums and throat.

K12 and M18, together

K12 is the most-studied strain for breath. M18 is studied for the bacteria around your gums. Virae carries both.

One lozenge, nightly, after brushing

Let it dissolve. No eating or drinking for 30 minutes. That is the entire routine.

The strains

Licensed from the lab that spent 20+ years isolating them

Both are strains of Streptococcus salivarius, the bacteria found in the mouths of people with naturally healthy oral microbiomes. Licensed from BLIS Technologies in New Zealand.

K12 Breath

The most-studied S. salivarius strain for oral malodour. In the foundational study it was associated with a substantial drop in the sulfur compounds behind morning breath and the tongue coating.

M18 Gums

The strain studied for the bacteria around your gums. In a 3-month trial M18 was associated with reduced gum bleeding and plaque.

6 billion CFU per lozenge Slow-dissolve format Vegan Made in the Netherlands
How Virae compares

Why people switch, and don't switch back

Virae
Mouthwash
& mints
Targets the bacteria behind the smell
They just mask it
Keeps the good bacteria
Alcohol strips them
Still working hours later
Wears off fast
Cares for your gums too
Not their job
One calm nightly habit
Rinse, repeat all day
Made properly

Held to a higher standard

Clinically studied strains

K12 and M18 are licensed from BLIS Technologies, with two decades of published research behind them.

Third-party tested

Every batch is tested for purity and verified CFU count, so the dose on the label is the dose in the lozenge.

Clean by design

Vegan, made in the Netherlands, with no alcohol, no artificial dyes and no harsh sweeteners.

Reviews

1,200+ people who stopped thinking about their breath

4.8
★★★★★
Average from 1,200+ verified buyers
LA
Lisa A.
Verified Reviewer
04/06/26
★★★★★

“I stopped thinking about my breath for the first time in years. I did not realise how much headspace it was taking up.”

SM
Sarah M.
Verified Reviewer
29/05/26
★★★★★

“I was skeptical, I'd been burned before. Two weeks in I was genuinely surprised. The morning coating is basically gone.”

RK
Rachel K.
Verified Reviewer
21/05/26
★★★★★

“Started it after antibiotics wrecked everything. It brought my mouth back to normal within about three weeks.”

DT
David T.
Verified Reviewer
14/05/26
★★★★★

“One lozenge instead of the three bitter tablets I gave up on years ago. Night and day, and it actually tastes fine.”

PN
Priya N.
Verified Reviewer
08/05/26
★★★★★

“My gums stopped bleeding when I brush. I did not even buy it for that, it was a bonus.”

SH
Steve H.
Verified Reviewer
02/05/26
★★★★★

“The first morning I forgot to check, I actually noticed I'd forgotten. That was the moment I knew it was working.”

Authentic customer testimonials. Individual results vary.

Choose how you start

Two ways in. Both risk-free for 60 nights.

Most popular · best value

3rd Bottle Free — 90-Day Reset

The Virae 90-Day Reset: three bottles of K12 & M18 lozenges with the tongue scraper

The change builds over weeks, so one bottle was never a fair test. The reset gives the system a real run, and everything below is included:

  • 3 bottles of K12 & M18 lozenges. Buy 2, get your 3rd free.£89.85
  • Free Virae tongue scraper. The coating is where the bacteria live.£12
  • Free The Fresh-Start guide. The nightly routine that gets results fastest.£9
  • Free Priority UK shipping.£4.95
Total value£115.80
Your price
£0.67 per night
£59.95 total for 90 nights
You save £55.85
Less than the mints and mouthwash you were buying anyway.

Try it for 60 nights, on us. If your mouth does not shift the way you hoped, for any reason including none at all, email us and we refund every penny. Keep the scraper. No form, no return, no argument.

Just want to try it

Single bottle

30-day supply · one-time
One bottle of Virae oral probiotic lozenges
£1.00 per night
£29.95 today
  • One bottle of K12 & M18 lozenges
  • Standard UK shipping (£4.95)
  • Same 60-day money-back guarantee
Just want to see how your mouth responds first? Start here, and upgrade any time.
Questions

We're here to help

Most people notice the first morning, often within a week. The fuller change takes 2 to 4 weeks. We would rather be straight about that than promise faster.

It is not a mint that masks the smell. It works on the bacterial balance, so it builds rather than fades. You keep taking it the way you keep brushing: maintenance, not a one-time fix.

Only if you choose Subscribe & save. The default is a one-time purchase, charged once, with nothing to cancel.

Cheaper products use one strain, or a dose too low to matter, and people tell us they taste awful. Virae is both clinically studied strains, 6 billion CFU, one pleasant lozenge, and on the 90-day supply it is under £0.67 per night.

Then Virae might not be enough on its own, and we will tell you that rather than sell you something that does not fit. Email us and we will point you in the right direction.

A dentist is always worth it for your teeth and gums. Virae works on the bacterial balance behind the smell, which is the layer a check-up does not change. Think of it as the at-home step that fits alongside seeing your dentist, not instead of it.

These are friendly strains naturally found in healthy mouths, in a food supplement with no alcohol or harsh ingredients. Most people tolerate it easily. If you are pregnant, breastfeeding, on medication or managing a health condition, check with your doctor first.

Many people start Virae straight after a course of antibiotics, to help rebuild the balance the antibiotics cleared.

60 days, no questions. If it does not work for you, email us and we refund every penny. You keep the free tongue scraper.

Isomalt, inulin, glyceryl behenate, natural spearmint, dicalcium phosphate, stevia. No alcohol, no artificial dyes, no harsh sweeteners. Vegan.

The Virae team
Why we made Virae

An honest oral probiotic, no theatrics.

We could not find one in the UK that used both clinically studied strains, did not bury you in pills, and did not shout. So we made one.

Two strains, one lozenge, no theatrics. Made in the Netherlands, tested, and backed by a 60-day promise. If it does not work for you, you email us and we refund you.

The Virae team

Start tonight. You'll know by the first morning.

One lozenge after you brush, and 60 nights to feel it, risk-free.

Virae
Virae Oral Probiotic
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