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Title

the gastroenterologist who studied 41,847 chronic bad breath cases found something that has nothing to do with your mouth— and everything to do withwhat's happening inside your body right now

By Dr. Richardsons

18-Year Gastroenterologist In Los Angeles, California.

April 2nd, 2026

7360+ Ratings

7360+ Ratings

I need to say something most doctors won't.

When a patient comes to me with bad breath that keeps coming back —
Breath that survives brushing.
Breath their dentist can't explain.
Breath that returns within an hour of mouthwash, tongue scraping, every protocol they've tried —

I don't think about their mouth.

I think about their gut.

And more importantly:
I think about how long it's been happening. And what it's doing to their body.

Because what nobody tells you —
What your dentist skips. What your ENT misses. What never appears in any "bad breath tips" article online —

Chronic bad breath that keeps returning despite perfect hygiene is not a mouth problem.

It is a signal from your body.

And it means something in your digestive system has been wrong — possibly for years.

Not "take a probiotic" wrong.

Wrong in a way that, left unaddressed, has been linked to inflammation, immune dysfunction, and digestive conditions that get significantly harder to manage the longer they're ignored.

I'm going to show you the research.
I'm going to show you the biological pathway connecting your gut to your breath.
And I'm going to show you why everything you've tried was never going to reach the actual problem.

But first — let me show you what I found.

We All Kept Failing For The Same Reason

Three years ago, I found myself in a Reddit thread.

I know. A gastroenterologist on Reddit.

Bear with me.

The thread was titled:
"Bad breath worse than cancer? Change my mind."

12,000 upvotes.

I opened it expecting the usual advice.
Mouthwash. Dentist. Drink more water.

Instead I found 41,847 people describing the exact same clinical picture.

Different ages. Different cities. Different backgrounds.

But the same words. Over and over.

"Perfect hygiene. Still smell."


"Back within an hour of brushing."


"Dentist says my mouth is fine. Still there."


"Spent $10,000 on dental work. Nothing changed."


"Scraped my tongue until it bled. Came back the next morning."

What struck me wasn't the frustration.

What struck me was the clinical consistency.

This wasn't people with poor hygiene.

This was a specific pattern.

A pattern I recognized from 18 years in clinical practice.

What 18 Years of Gastroenterology Taught Me That General Practitioners Miss

Let me be direct.

Most physicians — and almost all dentists — treat bad breath as a local problem.

Something in the mouth.
Bacteria on the tongue.
Gum disease.

And in many cases? They're right.

If you brush, scrape, see a dentist — and it resolves — it was an oral problem.

Case closed.

But that's not what we're talking about here.

We're talking about the patient who has already done all of that.

Who brushes twice a day.
Who scrapes daily.
Who has had cleanings, fillings, periodontal work, even tonsil removal.

And whose breath is still there.
Still returning.
Still unexplained.

That patient has a different problem.

And the research is increasingly clear on what it is.

The Biological Pathway Nobody Explains To You

Here is what's actually happening inside your body.

Your gut contains trillions of bacteria.

Under normal conditions, they're balanced — a microbiome that breaks down food, produces vitamins, regulates inflammation, supports immune function.

When that balance breaks down — a condition called dysbiosis — certain bacteria begin to dominate.

Anaerobic bacteria.
Bacteria that thrive without oxygen.
Bacteria that produce volatile sulfur compounds (VSCs) as a byproduct of breaking down proteins.

VSCs are the molecules behind the odors chronic sufferers describe.

Hydrogen sulfide. Methyl mercaptan. Dimethyl sulfide.

The chemistry behind "rotten." "Sulfur." "Sewage." "Feces."

Not metaphors. Accurate descriptions of what's happening in the body.

Here's the part nobody tells you:

Those sulfur compounds don't stay in your gut.

They enter your bloodstream.
They travel through your circulatory system to your lungs.
And they come out with every breath you take.

This is called systemic halitosis.

And it is — by definition — impossible to treat from the outside.

No mouthwash reaches your bloodstream.
No tongue scraper touches your lungs.
No dental cleaning addresses your gut microbiome.

This is why nothing has worked.

Not because you haven't tried hard enough.

Because everything you've tried has been aimed at the exit —
While the source kept running, deeper inside your body.

Your gut is a house on fire. The smoke travels through your blood and comes out your mouth.

You've been trying to clean the smoke from the window.
While the fire kept burning.

What Concerns Me As A Doctor — And Should Concern You Too

I want to stop here and be direct.

The bad breath is not the danger.

It is the signal.

Gut dysbiosis doesn't just cause bad breath and stop there.

It's associated with a range of systemic effects documented in research over the past decade.

Chronic gut inflammation — what researchers call leaky gut — has been linked in peer-reviewed studies to:

Fatigue
Immune dysregulation
Skin conditions
Mood disturbances
Elevated cardiovascular risk markers

H. pylori infection — one of the most common gut-origin causes of chronic breath odor — is a known risk factor for gastric ulcers.

In long-term untreated cases: gastric cancer.

It affects an estimated 44% of the global population.

Most are asymptomatic.

Except for — among other things — persistent bad breath.

SIBO (Small Intestinal Bacterial Overgrowth) — another documented source of systemic VSC production — is associated with malabsorption, nutritional deficiencies, and digestive dysfunction that worsens significantly without intervention.

I'm not writing this to frighten you.

I'm writing this because patients come to me having been told by multiple doctors that their bad breath is "not serious."

A cosmetic issue.
Something to manage with mints.

What I've found, again and again:

The breath was the first visible flag.

The signal that something had been imbalanced — often for years — while they were being reassured it was nothing.

When your body produces a persistent symptom that doesn't respond to surface treatment —

It's telling you something.

The question is whether you're looking at the right part of your body.

Why Everything You've Tried Was Never Going To Fix This

This is not a criticism of what you've used or the professionals you've seen.

It's a matter of mechanism.

Mouthwash kills bacteria in the oral cavity.

Its active ingredients do not survive digestion.

They don't reach the gut.

They cannot affect systemic VSC production.

They work for 20–40 minutes — exactly how long it takes for fresh gut-origin odor to replenish your breath.

That's not a coincidence. That's the mechanism.

Tongue scraping removes biofilm from the tongue surface.

For oral-origin bad breath, genuinely useful.

For systemic bad breath, the tongue coating is a downstream symptom.

A deposit of compounds that have already traveled from the gut.

Scraping it removes what's there.

It doesn't stop more from arriving.

Which is why it comes back within hours. Every time.

Probiotics add beneficial bacteria.

Some show modest results.

But adding bacteria doesn't neutralize the sulfur compounds already in circulation.

It doesn't bind the odor molecules already in your bloodstream.

One dimension of a multi-dimensional problem.

Dental work addresses oral bacterial sources.

If the problem is there, it resolves it.

If the problem is systemic — your dentist will correctly tell you your mouth is healthy.

Because it is.

The problem just isn't there.

None of these fail because they don't work.

They fail because they're solving the wrong problem.

The Solution That's Been Used In Hospitals Since 1947 — And Never Made It To The Supplement Aisle

In 1947, a paper was published in the American Journal of Surgery.

Surgeons working with colostomy patients were observing severe internal odor problems.

The odor wasn't coming from the mouth.

It was coming from the gut.

Nothing topical touched it.

So they administered a compound derived from chlorophyll — chlorophyllin — orally.

48 hours later.

The odor was gone.

Not reduced. Not masked.

Gone.

The mechanism was confirmed: chlorophyllin binds directly to volatile sulfur compounds in the digestive tract.

It works inside the gut —
Before those compounds enter the bloodstream.
Before they reach the lungs.
Before they come out as breath.

This is called internal deodorizing.

And it's fundamentally different from every oral hygiene product ever marketed for bad breath.

Because it operates at the source.

The research has been replicated and expanded across decades.

Hospitals have used this compound for exactly this purpose —
Managing odor that originates inside the body.

And almost nobody in the general public has heard of it.

The supplement aisle is full of mouthwashes and tongue scrapers and "fresh breath" pills.

Products aimed at the mouth. The tongue. The throat.

The exit point.

Not the source.

For years, if you wanted chlorophyllin at the clinically relevant dosage — 200mg, not the 50–100mg in generic Amazon products — combined with the complementary botanicals needed for the full mechanism —

You essentially couldn't get it.

That gap is what NOBO was built to close.

What NOBO Does — And Why The Dosage Is Everything

NOBO is a daily internal deodorizing capsule.

One capsule. Every morning. That's it.

Three active compounds. Each chosen for a specific reason.

200mg Chlorophyllin

The same compound documented in clinical literature for internal odor neutralization.

At the dosage the studies showed was effective.

Not 50mg. Not 100mg.

200mg.

Most chlorophyll products on Amazon contain a fraction of this.

Which is why most produce no meaningful result.

Dosage is not a minor variable.

It is the entire difference between a product that reaches the source and one that doesn't.

200mg Organic Parsley Extract

Chlorophyll-rich botanicals that support and amplify the cleansing action of chlorophyllin.

Also supports healthy digestive function — addressing the underlying dysbiosis, not just its output.

50mg Peppermint

Not for flavor.
Not for masking.

Documented antimicrobial properties against the anaerobic bacteria that produce VSCs.

Calms the digestive tract and reduces fermentation that contributes to internal odor production.

Together, these three compounds do something no mouthwash, scraper, or dental product can:

They work at the biological origin of the problem.

What Happens When You Start

I'll be honest about timelines.

This market has been overpromised to for years.

NOBO is not a 20-minute fix.

It's not a masking agent.

It works by changing the biochemical environment inside your gut.

That takes time.

 

DAY 1 TO 3

The morning taste is different.

Not gone — different.

Lighter.

The stale buildup that used to sit on your tongue by mid-morning is less intense.

You're not sure if you're imagining it.

You keep going.

DAY 3 TO 7

The odor is staying lighter for longer after brushing.

Where it used to return within an hour — it's now holding for two, three, four hours.

That had never happened before.

That's when you start to believe something is actually reaching deeper than anything else you've tried.

DAY 7 TO 14

The stale, sour taste is fading.

Actually fading.

You ask someone close to you to check.

Hours after your last brushing.

They don't notice anything.

DAY 1 TO 3

I noticed this fresh feeling that lasted longer than usual. Not minty fresh. Just... cleaner. Like the stale taste wasn't building up as fast. I wasn't sure if it was real or if I was just hoping. But I kept going.

DAY 3 TO 7

The morning taste was different. Not gone. But lighter. And it stayed lighter for hours after brushing instead of coming back in 20 minutes. I started to feel like maybe this was actually reaching deeper than anything else I'd tried.

DAY 7 TO 14

The stale, sour taste was fading. Actually fading. Mornings felt comfortable for the first time in years. I asked my husband to check my breath in the afternoon, hours after my last brushing. He said he didn't notice anything. I sat in my car after and cried.

DAY 14 TO 30

I went to dinner with a friend. Indoor seating, small table, face to face. I didn't think about my breath once during the entire meal. Not once. That hadn't happened in six years. I ordered a second bottle before I got home.

MONTH 2

Work meetings without calculating the distance. A first date where I actually leaned in. Laughing without covering my mouth. My husband kissed me one morning before I'd even brushed my teeth and didn't say anything. Just a normal kiss. I almost cried again.

MONTH 3

I stopped carrying mints. Not as a test. I just forgot to buy more and realized I didn't need them. That's when it hit me. This wasn't temporary relief. This was my life now. I started telling my friends. They tried it. Same results. Every single one.

You Can Stop Worrying. For Good.

I posted my experience in that same thread where I found the original comment.

 

Within a week, 30 people tried it.

 

Not one person said I was wrong.

 

Same results. Day 3 to 7 they noticed a difference. Day 14 they knew it was working. Every single time.

 

Then 300 people.

 

Then 3,000.

 

Now over 50,000 people have tried NO/BO and gotten their life back.

You know what the most common message I see in the reviews is?

 

"I'm angry. I'm angry I suffered for years when the answer was this simple."

 

I get it. I was angry too.

 

But here's what you need to understand:

 

It wasn't your fault.

 

Every other thing you tried treated your mouth.

 

This treats your gut.

 

Your dentist, your mouthwash, your tongue scraper. They weren't wrong. They just weren't looking in the right place.

 

The problem was never in your mouth.

 

It was just coming through it.
 

That's why nothing worked.

 

You just needed something that eliminates bad breath from the root.

You Have Two Choices Right Now

You can keep doing what you've been doing. More mouthwash. More mints. More worrying every time someone gets close to you.

 

Or you can try what 50,000 people already found.

 

Here's what makes this different:

 

I'm not selling you hope. I'm showing you what worked for me and thousands of other people who felt exactly the way you feel right now.

 

Try NO/BO for 60 days. If your breath doesn't change, if you're still worrying about distance, still popping mints before every conversation, still waking up to that same taste, send the bottle back for a full refund. No questions asked. I'm that confident that it will work for you too.

 

I spent thousands trying to fix this. You won't spend that here.

FIX YOUR BREATH TODAY

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Here's Exactly What Happens When You Order

TODAY: You click the button. Choose your supply. Enter your details. You'll get an order confirmation email within 5 minutes. (Check spam, sometimes it goes there.)

 

48 HOURS: Your bottle ships from the US. You'll get a tracking number. Standard shipping takes 3 to 5 days.

 

WHEN IT ARRIVES: Open it. You take just one capsule a day. Just take it every morning with water. Voila. That's it. No complicated routine. No lifestyle overhaul. Just one capsule that you take every morning.

 

DAY 3 TO 7: You'll notice that fresh feeling lasting longer. Most people message around this point asking "is this actually working or is it placebo?" It's actually starting to work.

 

DAY 14: Check with someone close to you. Ask them directly of they notice your breath smelling any different. Most people don't need to wait this long. But if you want certainty, this is when you'll have it.

 

DAY 60: If you're not convinced, email us. We refund you. Even if the bottle is empty. Even if you used the whole thing. You'll most likely want to get more at this point though!

The One thing You Should Know

NO/BO uses organic ingredients and specific dosages that most brands skip because they cost more to source. The 200mg chlorophyllin, 200mg parsley, 50mg peppermint ratio isn't something you can throw together from bulk powder suppliers.

 

That means supply isn't unlimited. When a batch sells out, you wait for the next one.

 

Two questions to ask yourself:

 

Are you willing to try one more thing, if it's actually different from everything you've tried?

 

Can you afford to wait another month living the way you're living now?

 

If the answer to both is yes:

CHECK AVAILABILITY

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If you've had your hopes up and been disappointed by previous methods, Here's why this is different

60 days. Full refund. Keep the bottle.

 

Try NO/BO for atleast 50/60 days for it to take full effect. Most people notice a different in the first 14 days but everybody works different. If it doesn't give you the desired results, just send it back and keep the bottle. No questions asked

 

You've been disappointed before. Probably more times than you can count. We know the fear of wasting hope again.

 

This either WORKS, or you pay nothing.

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One more thing.

94 days ago, I stared at the order page for fifteen minutes.

 

Thinking: "What if it doesn't work? What if I'm falling for another product that promises everything and delivers nothing? I can't handle another disappointment."

 

But I also thought: "I can't keep living like this."

 

So I ordered. Nervous. Skeptical. Almost certain I was wasting my money again.

 

Day 10, my coworker stood close to me in the break room and I didn't panic. I just talked. Like a normal person. I went to my car after and sat there for five minutes just breathing.

 

Last week I went to a crowded restaurant with friends. Sat in the middle of the table. Laughed. Ordered whatever I wanted without thinking about it.

 

It's the small things that get me. Not checking my breath every thirty minutes. Not angling away during conversations. Not carrying mints like a lifeline. Just existing.

 

I don't know what you're feeling right now. Maybe the same fear I felt. Maybe you're thinking "she got lucky, but it won't work for me."

 

I thought that too.

 

94 days ago I was popping mints before every conversation. Today I'm living a life I forgot was possible.

 

Whatever you decide, I'm rooting for you.

Rachel

CHECK AVAILABILITY HERE

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P.S. People ask me: "Rachel, why not just buy cheap chlorophyll on Amazon?" Because dosage matters. Most Amazon chlorophyll supplements are 50 to 100mg. The research used 200mg. NO/BO is the only one I found with the exact 200mg chlorophyllin, 200mg parsley, 50mg peppermint ratio that actually matches what the studies showed works. Cheap pills saved me nothing. The right formula saved me everything.

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DAY 14 TO 30

You go somewhere.

Dinner. A meeting. A conversation at close range.

You don't think about your breath once.

Not once.

That hadn't happened in years.

MONTH 2 onwards

You stop carrying mints.

Not as a test.

You just forgot to buy more.

And realized you didn't need them.

That's when it hits you.

This isn't temporary relief.

This is your life now.

What 100,000+ People Have Reported

The most common message in our reviews isn't "my breath is fresher."

It's this:

"I'm angry. I'm angry I suffered for years when the answer was this simple."

That anger makes sense.

Once you understand the problem was systemic —

That it was operating at a biological level no oral product was ever going to reach —

The years of failure look different.

Not evidence of personal failure.

Evidence of being given the wrong solution.

Because nobody looked in the right place.
 

You Have Two Choices Right Now

You can keep doing what you’ve been doing.

 

More mouthwash. More appointments. More calculating distance. More gum as armor. More eating alone.

 

Or you can try what 100,000 people already found.

 

I’m not selling you hope.

I’m showing you a test that worked for me and every single person I’ve shared it with.

 

Try NO/BO for 60 days. If your breath doesn’t change, if you’re still calculating distance, still covering your mouth, still waking up with that same taste - send the bottle back.

 

Even if it’s empty. Full refund. No questions. No forms.

 

I spent thousands trying to fix this.

You won’t spend that here.

You won’t spend even 1% of that here.

 

Most people feel the difference by Day 3-7.

See real change by Week 2.

Stop calculating distance by Month 2.

FIX YOUR BREATH TODAY →

60 Day Money Back Guarantee · Free Shipping · Secure Checkout

Here's Exactly What Happens When You Order

TODAY: You click the button. Choose your supply. Enter your details. You'll get an order confirmation email within 5 minutes. (Check spam, sometimes it goes there.)

 

48 HOURS: Your bottle ships from our US facility. Tracking number sent to your email. Standard shipping takes 3–5 days.

 

WHEN IT ARRIVES: Open it. One capsule with water in the morning. That’s the entire routine. No complicated protocol. No lifestyle overhaul.

 

DAY 3 TO 7: You’ll notice the fresh feeling lasting longer than usual. Most people message us around this point asking “is this actually working or am I imagining it?” You’re not imagining it.

 

DAY 14: Check with someone close to you. Ask them directly. Most people don’t need to wait this long. But if you want certainty, this is when you’ll have it.

 

DAY 60: If you’re not convinced, if you’re still calculating distance - email us. We refund you. Every cent. Even if the bottle is empty. Even if you used the whole thing.

The One thing You Should Know

NO/BO uses organic ingredients and specific dosages that most brands skip because they cost more to source. The 200mg chlorophyllin, 200mg parsley, 50mg peppermint ratio isn’t something you can throw together from bulk powder suppliers.


 

That means supply is limited. When a batch sells out, you wait for the next one.

 

Two questions to ask yourself:

 

Are you willing to try one more thing, if it's actually different from everything you've tried before?

 

Can you afford to wait another month living the way you're living now?

 

If the answer to both is yes:

CHECK AVAILABILITY →

60 Day Money Back Guarantee · Free Shipping · Secure Checkout

If it doesn't work, you get your money back.

If it does work, you get your life back.
Title

60 Day Money Back Guarantee

Free
Shipping

Secure
Checkout

Hassle Free
Returns

GET NO/BO NOW →

60 Day Money Back Guarantee · Free Shipping · Secure Checkout

P.S. - People ask me: "Doctor, why not just buy chlorophyll on Amazon?"

Because dosage is everything.

Most Amazon products contain 50 to 100mg.

The clinical research used 200mg.

NOBO is the only product I found with the exact 200mg chlorophyllin, 200mg parsley, 50mg peppermint ratio that matches what the studies showed works.

I tried the cheap stuff first.

Spent $200 on it.

It did nothing.

The right dosage, the right combination —

That's not a marketing claim.

That's what changes the outcome.

— DR. Richardsons

CHECK AVAILABILITY HERE →

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⚡ UPDATE: APRIL 2026

 

Demand for NOBO has surged significantly. Our current batch is running low. Order now to lock in free shipping and the 60-day guarantee before this batch sells out. This offer is not available in stores or anywhere else.

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