THE GUT–MOUTH CONNECTION

4.8/5 based on 1,241 reviews

The 'Gut-First' Method For Breath That Doesn't Come Back Without Living On Mints And Mouthwash

Why it keeps coming back — and what to do about it:

Works below the mouth, where the smell is resupplied
Supports the digestive environment behind recurring odour
Supports the gut barrier — the pepsin side of the story
Supports a balanced gut microbiome
Two capsules a day, with a meal
Keeps your normal dental routine exactly as it is
Root Source GR-9
TRY ROOTSOURCE GR-9 NOW
60-Day Money-Back Guarantee

The Mouth Is Where You Smell It. It Isn't Always Where It Starts.

Think of digestion as a kitchen. Food comes in, gets broken down, moves through. When the kitchen is running properly, nothing sits around long enough to turn.


When the kitchen backs up, food ferments instead of being processed. Fermentation produces odour-causing compounds — and those compounds travel upward.

Pepsin belongs in digestion. When the gut barrier is strained, that digestive process contributes to the imbalance behind recurring breath odour — and your mouth takes the blame for something that started well below it.


That's the gut–mouth connection. GR-9 is built to support the kitchen, not cover the smell.

The 4-Part Gut-First Breath Protocol You Can  Believe In

Four compounds formulated to support the gut barrier and the digestive environment from the inside.


Support Healthy Stomach Acid

Support Healthy Stomach Acid

Organic Apple Cider Vinegar (1,000mg) supports healthy digestion — so food is broken down and moved through instead of sitting long enough to turn.

Feed Your Good Bacteria

Feed Your Good Bacteria

Inulin prebiotic fiber from Jerusalem Artichoke nourishes beneficial gut bacteria, supporting the balance of the environment where odour compounds are produced.

Keep Brushing. Just Stop Stopping There.

Keep Brushing. Just Stop Stopping There.

None of this replaces your dentist or your routine. It adds the one place you haven’t looked yet — underneath.

Support Healthy Stomach Acid

Support Healthy Stomach Acid

Organic Apple Cider Vinegar (1,000mg) supports healthy digestion — so food is broken down and moved through instead of sitting long enough to turn.

Feed Your Good Bacteria

Feed Your Good Bacteria

Inulin prebiotic fiber from Jerusalem Artichoke nourishes beneficial gut bacteria, supporting the balance of the environment where odour compounds are produced.

Keep Brushing. Just Stop Stopping There.

Keep Brushing. Just Stop Stopping There.

None of this replaces your dentist or your routine. It adds the one place you haven’t looked yet — underneath.

Root Source GR-9 3-month supply upgrade
Root Source GR-9
Root Source GR-9
Root Source GR-9
Root Source GR-9
Root Source GR-9
Made in USA
Made in USA
Fast Shipping
High Quality Ingredients
Root Source GR-9 3-month supply upgrade
Root Source GR-9
Root Source GR-9
Root Source GR-9
Root Source GR-9
Root Source GR-9

4.9/5

(1,241+ reviews)

Root Source GR-9

Stop treating recurring breath odour like a brushing problem — it starts below the mouth.

✔️ The smell isn’t coming from a lack of brushing. It’s being resupplied from below


✔️ Supports the gut barrier and the digestive environment — not the surface

✔️ 4-in-1: organic apple cider vinegar, inulin, DigeZyme® enzymes, L. acidophilus LA85


✔️ No mints. No rinses. No masking

✔️ Two capsules a day with a meal — keep your normal dental routine


✔️ 60 days to decide. Made in the USA. Ships in 3-4 days
FREE Shipping to USA

👩‍⚕️ Try GR-9 risk-free for 60 days — keep brushing, add the gut. If it isn’t right for you, send it back.

Guarantee Badge

Less than 1% of customers claim our Money Back Guarantee

"Most people don't realize that chronic throat mucus is rarely a respiratory issue — it's almost always a gut issue. Low stomach acid causes silent reflux. Bacterial imbalances trigger inflammation. Undigested food ferments and creates mucus-producing byproducts. GR-9's 4-in-1 formula addresses all of these mechanisms simultaneously. This is what I recommend to patients who've tried antihistamines, nasal sprays, and ENT visits without lasting relief."
Dr. Michael Chen
Board-Certified Gastroenterologist, 15+ Years Clinical Experience
GR-9
Others
Works Below The Mouth
Supports the digestive environment where odour-causing compounds are produced, instead of covering the smell.
Restores Gut Balance
Inulin feeds beneficial bacteria and L. acidophilus LA85 supports a balanced microbiome.
Less Left To Ferment
DigeZyme® supports the breakdown of carbs, protein, fat, fiber and dairy — so less food sits and turns.
Nothing To Wear Off
Two capsules a day with a meal. No minty countdown, no rebound dryness, non-habit forming.
Protocol Step
Directions
Dosage
Take 2 capsules daily with a meal and a full glass of water.
Consistency
The digestive environment takes time to shift. Take GR-9 every day for at least 30 days, and keep your normal dental routine.
Hydration
Drink plenty of water through the day — a dry mouth makes odour worse on its own.

Why you'll love this product

Works On The Source — Mints and mouthwash work on the smell and the surface. GR-9 supports the gut barrier and the digestive environment underneath it.
Simple Daily Routine — Just 2 capsules with a meal. Nothing to carry, nothing to reapply.
Adds To Your Routine — Keep brushing, flossing and your dental visits exactly as they are.
4-in-1 Complete Formula — Organic apple cider vinegar + prebiotic fiber + digestive enzymes + probiotic in one bottle.
60-Day Risk-Free Guarantee — Try GR-9 for a full 60 days. If it isn’t right for you, we’ll refund every penny.

JOIN 20.000+ OTHERS

Real Customer Success Stories

Watch authentic testimonials from customers who went gut-first

Why GR-9 Works Where Mints And Mouthwash Don't

Mints work on the smell. Mouthwash works on the surface. GR-9 works on the kitchen.

Why GR-9 Works Where Mints And Mouthwash Don't

Mints work on the smell. Mouthwash works on the surface. GR-9 works on the kitchen.

Poor Breakdown → Food Sits → Odour

When food isn't broken down properly it sits instead of moving through — and what sits long enough starts to turn.

How GR-9 Helps: Organic Apple Cider Vinegar (1,000mg) supports healthy digestion so the kitchen keeps moving.

Bacterial Imbalance → Fermentation → Odour

When the balance of gut bacteria shifts, fermentation produces odour-causing compounds — and those compounds travel upward.

How GR-9 Helps: Inulin from Jerusalem Artichoke (200mg) nourishes beneficial bacteria; L. acidophilus LA85 (1 Billion CFU) supports a balanced microbiome.

Undigested Food → It Ferments → Odour

Undigested carbs, protein, fat and dairy are the raw material fermentation works on. Less left over means less to ferment.

How GR-9 Helps: DigeZyme® (100mg) supports the breakdown of food across all five categories.

Feature product image

Real People. Real Relief.

Excellent 4.9/5 | 1,422+ reviews

Austin, TX

I've had this throat mucus problem for YEARS. Doctors told me it was allergies, post-nasal drip, acid reflux — I tried everything. Two weeks on GR-9 and I woke up with a clear throat for the first time in forever. I actually cried. It's that life-changing.

Jennifer M.
Jennifer M.

Chicago, IL

I was that guy constantly clearing his throat in meetings. So embarrassing. My wife found GR-9 and honestly I was skeptical — how could a gut supplement fix my throat? But it works. I don't think about my throat anymore. It's just... normal.

D
David R.

Phoenix, AZ

The mucus was worst after eating. Every meal I'd have this thick phlegm I couldn't clear. My doctor said 'that's just how you are.' Three weeks on GR-9 and I can eat without dreading what comes after. This product understands what's actually happening.

P
Patricia L.

Denver, CO

Morning mucus was ruining my life. Wake up, hack and spit for 20 minutes, finally feel human. Now I wake up clear. Simple as that. Wish I found this years ago.

R
Robert J.

Seattle, WA

My ENT had no answers. Allergist had no answers. This supplement had the answer. It was my gut the whole time. Mind blown.

L
Lisa M.

Atlanta, GA

The embarrassment of clearing my throat during Zoom calls is gone. I can actually focus on what I'm saying instead of the gunk in my throat. Life changer for anyone who works remotely.

James W.
James W. Verified customer

GR-9

Clinically Backed

3rd-Party Tested

Allergen-Free & Clean

Global Certified Facilities

Vegan & Gluten-Free

Other Brands

Trend-Based Blends

No Test Proof

Fillers & Additives

Low-Quality Manufacturing

Sugar, Flavors, Binders

GR-9 vs. Other Brands

Clinically Backed Ingredients

Ingredients proven to work

Visible Results in Weeks

Feel a difference in weeks

Underneath, Not Over The Top

Support for the source, not a cover for the smell

Clean & Pure Ingredients

Works on the gut environment behind recurring breath odour

Try Risk-Free Today
60-day money back guarantee

Your Gut-First Breath Timeline 30-Days

Two capsules a day with a meal, sitting on the shelf beside everything you already do. Here is how the routine builds.

Week 1

Support Healthy Digestion

Organic Apple Cider Vinegar (1,000mg) supports healthy digestion, so food moves through instead of sitting.

Week 2

Feed Your Good Bacteria

Inulin from Jerusalem Artichoke nourishes beneficial gut bacteria and supports the balance of the digestive environment.

Week 3

Break Food Down Properly

DigeZyme® enzyme blend supports the breakdown of carbs, protein, fat, fiber and dairy — leaving less behind to ferment.

Week 4

Rebalance Your Microbiome

L. acidophilus LA85 (1 Billion CFU) supports a balanced microbiome — the environment underneath it all.

Life Without The Mint Tin What Changes When You Work On The Kitchen Instead Of The Smell

No More Ten-Minute Check

Brush, walk out, and stop counting the minutes until you need to reach for something again.

Stand Where You Want To Stand

No half-step back. No turning your head slightly. No choosing the seat across the table instead of beside them.

Meals Without The Aftermath

Eat lunch with people instead of planning what you will need afterwards.

One Less Thing To Carry

The tin in the car, the pack in every bag, the pocket check before you speak. Two capsules a day replaces the whole ritual.

Rated 4.8/5 based on +10,839 Total Ratings

Customer Reviews

See what our customers are saying about our products

Review by Sarah
Sarah, 28 Verified Buyer
The product has completely transformed my routine. I'm seeing amazing results and couldn't be happier with my purchase.
Review by Michael
Michael, 35 Verified Buyer
I was skeptical at first, but after using this for a month, I'm a true believer. The quality is outstanding!
Review by Jessica
Jessica, 42 Verified Buyer
Great product that delivers on its promises. Would definitely recommend to friends and family.

Our Promise 60-Day Money-Back Guarantee

Sixty days to decide. Two capsules a day with a meal, alongside the brushing and flossing you already do.

If it isn’t right for you, contact us inside 60 days and send it back for a complete refund.

No questions. No hassle. Keep your dental routine either way.

Try Risk-Free Today
100% Satisfaction
Fast Shipping
Easy Returns

Our Promise 60-Day Money-Back Guarantee

Sixty days to decide. Two capsules a day with a meal, alongside the brushing and flossing you already do.

If it isn’t right for you, contact us inside 60 days and send it back for a complete refund.

No questions. No hassle. Keep your dental routine either way.

Try Risk-Free Today
100% Satisfaction
Fast Shipping
Easy Returns

Frequently Asked Questions

Everything you need to know about the gut-first approach to breath

Bad breath comes from the mouth — how does a gut supplement help? +

The mouth is where you smell it; it isn't always where it starts. When the digestive environment is out of balance, food ferments instead of being processed, and fermentation produces odour-causing compounds that travel upward. GR-9 supports the gut barrier and the digestive environment underneath that. It is not a replacement for dental care.

How long until I notice a difference? +

This works on the digestive environment, not on the surface, so it is not a mints-style instant change. Most people give it 2–4 weeks of daily use before judging. You have 60 days.

Is this safe with other medications? +

GR-9 contains natural ingredients. Consult your healthcare provider if you take medications, especially acid-related prescriptions. Persistent bad breath can also have dental or medical causes — see a dentist or healthcare professional if symptoms continue.

Do I stop brushing and using mouthwash? +

No. Keep everything you are already doing — brushing, flossing, tongue scraping, dental visits. GR-9 adds the one place most people never look: underneath.

I've tried probiotics before. Why is this different? +

Most probiotics address one piece. GR-9 is 4-in-1: organic apple cider vinegar, inulin prebiotic fiber, the DigeZyme® enzyme blend, and L. acidophilus LA85 — working on digestion and microbiome balance together.

What if it doesn't work? +

60-day money-back guarantee. Full refund, no questions asked.

How do I take it? +

2 capsules daily with a meal. That's it.

How long until I notice a difference? +

This works on the digestive environment, not on the surface, so it is not a mints-style instant change. Most people give it 2–4 weeks of daily use before judging. You have 60 days.

Do I stop brushing and using mouthwash? +

No. Keep everything you are already doing — brushing, flossing, tongue scraping, dental visits. GR-9 adds the one place most people never look: underneath.

What if it doesn't work? +

60-day money-back guarantee. Full refund, no questions asked.

Real People. Real Relief.

Verified customer reviews for GR-9

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