Dr. BY

Find the answer to respiratory health at the airway from Doctor BY!

[Image: A white dog licking a blue stick-shaped product labeled "Dr. BY DOCTOR BREATH 8g" held by a hand]

✔ Ranked No. 1 for the most reviews

✔ Ranked No. 1 for the best reviews

✔ Ranked No. 1 in brand category

* Based on Naver search as of February 4, 2023 / Dog and cat organ nutrition supplements, respiratory nutrition supplements

* Organizer: Korea Consumer Forum / Research Model: BCLi Research Model

*This product is not a medicine intended for treatment purposes.

SINCE 2021

TF-343 Doubled Concentration, Breath Feels Lighter

Doctor BY Breath 3.0

Doctor BY Breath 1.0

<2021~2024>

Applied TF-343, the first patented ingredient in Korea for trachea health

Doctor BY Breath 2.0

<2024~2025>

Applied 'iron' necessary for normal immune function and cell division

Doctor BY Breath 3.0

<2025~>

TF-343 1,392mg or more → 2,796mg or more (+100% increase)

Notice!

To improve absorption and minimize allergies, partially hydrolyzed ingredients are used, which may cause a strong scent. This is not a product defect, so you can use it with confidence.

(Uses 5,000 Dalton raw materials)

• If there is no definite difference, 100% full refund! •

Clear a Day's Worth of Stuffy Feeling!

Doctor By Breath

Contains TF-343 2,796mg or more

• Can help with larynx health
• Can help with respiratory health

*This product is not a medicine intended for treatment.

The exclusive ingredient ‘TF-343’ can only be found at Doctor By!

Source: Sungkyunkwan University - raw material exclusive contract document

"TF-343 helps with larynx and respiratory health" academic research materials:
Detoxifying Effects of Oriental Herb Extract Mixtures on Nicotine and Dioxin. J. Food Sci. Technol. 35(5) : 980-987(2003).
Protection and Detoxification Effects of Oriental Herb Extract Mixture on TCDD-Induced Oxidative Stress. J. Korean Soc. Food. Sci. Nutr. 37(3) : 294-301(2008).
Journal of Immunology Research Vol. 2019, Article ID 8315845, 12p
Reference: Animal Drug Labeling and Advertising Standards and Scope Guidelines
(J. Food Sci. Technol.(SCIE)) | Journal of Immunology Research (SCIE) | J.Korean Soc. Food. Sci. Nutr.(KC Grade)

[Image: A white dog sitting next to two boxes of the product "DOCTOR BY BREATH 3.0" with a blue logo of a dog exhaling breath.]

01 Contains patented ingredient developed for larynx & respiratory health

Contains plant-based complex extract TF-343

02 Reliable manufacturing process

Carefully manufactured in facilities certified by FDA, ISO, and HACCP using non-toxic natural ingredients

03 Can be administered without a break

No gastrointestinal toxicity, so it can be given consistently every day

! This product does not contain ‘bromelain,’ a pineapple extract that may cause allergic reactions.

2020, a record of days when my heart was quiet, Nokdu's breath

"Kek, Kek..."

A hacking cough that bursts out just from a little cold, going out for a walk, or even drinking water, sounding like the noise of a goose honk.

Isn't there a way to breathe a little easier?

In 2020, we started with this simple question,

and began creating 'Doctor Bai Breath.'

[Image: Various small containers with different colored paste-like samples labeled Sample 1, Sample 2, Sample 3, Sample 4, Sample 5A, Sample 5B, Sample 5C, Sample 6, Sample 7, Sample 8A, Sample 8B, Sample 9, Sample 10, Sample 11, Sample 12, Sample 13]

However, the process was a series of 'failures.'

Dozens of mixture tests,

battles against flavors kids refused,

and balancing effectiveness and palatability took more than a year.

The birth of "Doctor By Breath" has now crossed beyond South Korea and is spreading worldwide, helping countless puppies in America, Asia, and many other countries to breathe comfortably.

2 Out of 3 Customers Repurchase!

If customers are not satisfied with the product, they do not repurchase.
A 65.7% repurchase rate proves the quality of ‘Doctor 바이’.

Feel the difference before and after administration!

30-Day Review from Nth Real Buyer

Doctor By Breath

It's really amazing how the coughing reduced. My dog must have suffered a lot until now,

If this effect is this good, I will definitely buy more. I eat it well and will purchase again~

- xyuj*****

The gagging sound has decreased. My puppy is young, but feeding it consistently, the gagging reduced completely about twice a month,

Also, the puppy is very picky but it ate well from the start so I felt relieved. Ate them all and planning to order again ~

- ligh*********

For a couple of months the gagging sound didn't improve even with hospital visits,

But after eating this, it got better. I ordered again immediately.

Really trust and buy this product.

- kind*******

My Pomeranian had tracheal collapse and often coughed,

but since consistently feeding this, the gagging sound has almost disappeared! Also, it eats well as if it likes the taste.

- jkeu***

My dog has weak respiratory system but it has been almost 2 years since it started eating this.

Since feeding this, it has never made a gagging sound even once.

So I trust it a lot and feel relieved. Now, if there's none, I get worried.

- gmlw*****

※ These reviews are based on actual customers who purchased from Naver Brand Store and used the product for over one month, selected from 2024-2025 reviews.

※ This product is not a medicine or intended for treatment purposes.

Naver Shopping

Doctor By Breath is the product with the most reviews on Naver Shopping.

*As of 2024.08.07, based on Naver Shopping search for puppy gingivitis & respiratory nutritional supplements by number of reviews.

[Image: Multiple photos of small dogs enjoying the product, each dog shown licking or biting a blue stick-shaped item labeled "Doctor By Breath."]

Source: Naver Shopping review images

Dr.BY × Amazon × Shopee

Amazon · Shopee Recognized Brand, Dr.BY

Global! Highly rated everywhere

Amazon US Amazon’s Choice

First Korean brand ranked No.1

#1 New Releases in Cat Supplements & Vitamins, Probiotics, Multivitamins

Shopee Singapore · Malaysia · Thailand · Philippines · Vietnam

First Korean brand ranked No.1

Pet supplements category

Amazon Japan

Ranked No.1 for 22 consecutive weeks

犬のハーブサプリメント #1 (Dog herbal supplements #1)

KITA (Korea International Trade Association)

Awarded for top export

On June 2, 2025, Trade Day

Shopee Customer Reviews

★★★★★

K*******e (Philippines)

It works great for dogs with bronchitis issue. My dog loves it so much. Well packed and delivered immediately.

Effective for my dog’s respiratory system. My dog really loves it.

★★★★★

J*******6 (Singapore)

My 19-year-old was having the old dog cough issue and every night will always have the choking sound. After 2 doses, she can sleep better at night. Choking sound lessened. Will definitely buy again.

19 years old senior dog had severe coughing at night. After 2 doses, she definitely slept well and coughing lessened!

★★★★★

K*******k (Malaysia)

This product is good for my dog to reduce her cough especially at night time.

Especially good for dogs who cough at night.

Amazon Customer Reviews

★★★★★

ヨ*ダ (Japan)

Cough was severe so I tried feeding it, but it got better quickly. Can mix with food, and the dog eats it like a treat or chew well!

Cough was severe so I tried feeding it, and it quickly improved.

★★★★★

G*********r (USA)

This product rocks! My picky dogs cannot resist it! This literally stops the hacking after about an hour or so.

Even picky dogs didn’t refuse! Cough stopped about one hour after taking it.

★★★★★

S*********e (USA)

Eating so well! I think my baby cough less and liking it! And it’s individually packed, very convenient. I’ll definitely get this again!

My dog coughs less and likes it! Individually packaged and very convenient.

‘Dr.BY’ is a brand exported to
13 countries worldwide!

[Export countries: USA, Japan, Canada, Mexico, Singapore, Malaysia, Philippines, Thailand, Vietnam, Brazil, Taiwan, Hong Kong, Mongolia]

[Health information provided for understanding, not product information]

Various Symptoms Appearing as Respiratory Distress in Puppies

Wheezing! Gagging Sound! Coughing Sound!

[Image: Illustration of a white dog with brown ears and paws, shaking off water with droplets flying off.]

Children with naturally weak airways who have a high probability of airway narrowing

• Genetics
• Weight gain
• Aging

Incorrect secondary management
is the cause that worsens airway diseases!

[Product information disclaimer: Health information for understanding, not product information]

Narrowed trachea, polluted air

Do you know the risks of tracheal collapse?

[Image: Illustration of a dog showing an internal view of the trachea with a highlighted collapsed section]

Stages of Tracheal Collapse and Air Utilization Rate

Source: Dallas Veterinary Surgical Center / Tracheal surgery in the dog: Part II. Compend Contin Educ Pract Vet 5:738-751, 1983.

* Cases with causes were treated as 'O' for blind processing.

<This is scientific data from academic literature, and this product is not indicated as a medicinal product for treatment purposes.>

[Health information for understanding, not product information]

In increasingly severe air pollution,

the respiratory health of pets attacked by it

[Image: Scientific paper titled, "Canines as Sentinel Species for Assessing Chronic Exposures to Air Pollutants: Part 1. Respiratory Pathology," containing multiple pages of text.]

• "Fine dust particles dispersed throughout the respiratory tract"
• "Numerous fine dust particles confirmed outside the respiratory tract"
• "Fine dust particles confirmed inside alveolar cells"

In lung tissue of puppies exposed to fine dust long-term, numerous fine dust particles and lung tissue damage and pathological changes confirmed

Source: Toxicological Sciences 61, 342-355 (2001) / Study on 152 healthy stray mongrel dogs.

This is a scientific study reference and does not imply that the product is a medical or therapeutic drug.

[This is health information intended for better understanding, not product information]

Our child who communicates with the world through the nose and mouth

The core of quality of life: 'Breathing'

*Diseases with known causes have been treated as 'O' for blind processing.

Nutrition for the fundamental lymphatic & respiratory health of companion animals

Doctor BY Breath

TF-343

Helps lymphatic and respiratory health

Magnesium

Helps with energy utilization and maintenance of muscle function

Propolis

Helps with oral antioxidants and antibacterial effects

[Image: Box packaging of Doctor BY Breath 3.0 supplement for dogs, showing a blue dog illustration and product details.]

Oral product 240g (8g x 30 packets)

“TF-343 helps lymphatic and respiratory health”: Academic references

Detoxicating Effects of Oriental Herb Extract Mixtures on Nicotine and Dioxin. J. Food Sci. Technol. 35(5) : 980-987(2003)

Protection and Detoxification Effects of Oriental Herb Extract Mixture on TCDD-Induced Oxidative Stress. J. Korean Soc. Food. Sci. Nutr. 37(3) 294-301(2008) | Journal of Immunology Research Vol. 2019, Article ID 8315845, 12p

Reference: Guidelines on Statements and Advertisement Scope for Licensed Pet Food

<J. Food Sci. Technol. (SCIE level)> | Journal of Immunology Research (SCIE level) | J. Korean Soc. Food. Sci. Nutr. (KCI level)>

Check Quantity & Absorption Rate with Scientific Data!

Q1. Does higher moisture content mean lower functionality?

A1. Having more moisture does not mean functionality decreases. The exclusive material TF-343 used in Dr. Vibe Brest actually helps absorption in the body. It is optimized in formulation through heat extraction methods, and rather than simple content, precise intake and bioavailability are more important. Also, TF-343’s safety and functionality have been verified through cell and animal testing.

Q2. Can the claim "absorption rate is higher" be trusted?

A2. Without objective data (clinical or papers), the claim that "absorption is superior" is difficult to trust. Be sure to check if there is scientific data (cell tests, animal tests) comparing products!

Notice: A&Bio Research Institute does not compare its products with others but researches and develops based on scientific evidence and experimental data!

The only pathway where oxygen passes—essential for moist care and hydration of the mucous membranes!

(Moisture 85%)

[Image: Several test verification documents with a red stamp reading "Heavy metal, salmonella test - PASSED"]

Dr. Buy Bless uses only safe raw materials to provide a product that can be administered without worry.

For fundamental lung & respiratory health,

Start with Breso!

Before Stirring

After Stirring

It is not spoilage or foreign substance!

Without using emulsifiers or preservatives, a high moisture content may cause water to separate out naturally at first.

Please knead sufficiently with your hands before feeding after opening.

[For understanding, not product information]

The core ingredient for lung & respiratory health in Dr. Buy Breath is focused on TF-343, a 100% plant extract confirmed through various patents and clinical trials!

The key ingredient of Dr. Buy Breath, ‘TF-343’, is an optimal blend applied through joint research with Sungkyunwan University-based development company Sungkyun Bio Tech!

<The following are patents related to TF-343 ingredient>

[Image: Three patent certificates related to TF-343 ingredient]

CERTIFICATE OF PATENT

Patent Number: 10-2058618

Application Number: 10-2019-0019208

Filing Date: February 19, 2019

Registration Date: December 17, 2019

Title of the Invention: Composition for prevention or treatment of respiratory diseases induced by fine dust, using plant extracts as active ingredients

CERTIFICATE OF PATENT

Patent Number: 10-1617577

Application Number: 10-2015-0004640

Filing Date: January 13, 2015

Registration Date: April 26, 2016

Title of the Invention: Composition including plant extracts for heavy metal emission and detoxification

Exclusive material 'TF-343' is only available at Dr. Buy!

Source: Sungkyun Bio Tech – Exclusive supply contract for raw materials signed

[Information for understanding, not product information]

Respiratory Symptom Indicator Change Graph

* Respiratory disease induction model experiment (Nicotine)

[Source: Korean J. Food Sci. Technol. Vol.35, no.5, pp 980-987 (2003)]

* This academic data is copyrighted

* This academic evidence is for scientific research only, and this product is not intended for treatment purposes or as a medicine

[Information to aid understanding, not product information]

Particle Discharge Promotion and Inflammation Reduction Graph

[Source: Journal of Immunology Research. Vol. 2019, Article ID 8315845, 12 pages]

* This academic data is copyrighted / Symptoms with 'O' have been blinded as 'O' for treatment.

<This is scientific data from an academic paper and does not indicate that this product is a medicinal drug for treatment purposes.>

[Information for understanding, not product information]

Liver Function Indicator Change Graph

[AST]

(Aspartate aminotransferase)

[ALT]

(Alanine aminotransferase)

Liver function impaired by dioxin recovers to normal levels

[Source: J Korean Soc Food Sci Nutr 37(3), 294~301 (2008)]

* This academic data is copyrighted.

* This academic text is scientific evidence and does not indicate that this product is a therapeutic or medicinal drug.

* TF-343 data is based on animal and clinical tests; this data is not intended for veterinary use and is for safety reference only.

[Product information is not included; this is raw material information for understanding]

TF-343 Toxicity and Safety Evaluation

Confirmed as Safe Material by Subacute Oral Toxicity Test Results!

Testing Institution: Korea Testing & Research Institute for Chemical Industry (GLP institution)

In 2025, Doctor Bio's Dedicated Research Yields Another Achievement!

[Image: A scientific research paper titled "TF-343 Recovered Cyclophosphamide-Induced Compromised Immune Status in a Mouse Model" published in the Journal of Microbiology and Biotechnology]

The key ingredient of 'Doctor Bio Bress,' 'TF-343,' continues to advance foundational research and has now been published as an official research paper.

[Source: Journal of Microbiology and Biotechnology (J. Microbiol. Biotechnol, 2025. 35: e2506034)]

Dr. By Breath reduces calories and minimizes sodium for consistent intake in nutritional management

Dr.BY 4 FREE

Dr.BY Breath is honestly made using scientifically functional materials in a HACCP manufacturing facility.

Trusted because of scientific ingredients!
Dr. Buy Brest, makes it clean and neat!

Due to the characteristics of natural ingredients, color changes and raw ingredient particles may clump together, appearing like spotty tissue.

One pouch a day for nutritional management and as a snack substitute is a versatile product that can be used in various ways.

Dogs and cats are clearly different beings! Dr. Buy does not develop cross-use products.

'Affiliated with Dr. Buy'

Developed by veterinarians and master's/PhD specialized researchers

Directly researched at a government-recognized ‘In-house Corporate-Affiliated Laboratory’ using ‘research equipment owned by Dr. Buy’.

[Image: Certificate of Corporate-Affiliated Research Laboratory Recognition]

[Image: Veterinarian examining a dog]

[Image: Researchers operating laboratory equipment]

Manufacturing Process

Dr. Buy Bles does not use artificial coloring or preservatives.

Manufactured safely at a specialized functional food manufacturing company certified by FDA, ISO, and HACCP.

Veterinarians & Ph.D. Researchers Directly Answer!

'Doctor Buy Breath' Frequently Asked Questions (FAQ)

Q1. Should it be given before or after meals?

A1. It can be given regardless of before or after meals. The important thing is to consistently maintain the recommended daily amount.

Q2. Is it okay to give this product together with other nutritional supplements?

A2. It is safe to give together as long as ingredients do not overlap. Doctor Buy products are designed to avoid overlapping ingredients, so there is no issue with concurrent use. However, if giving with other brand products, please check the ingredients of each product carefully or switch to the other product after completing the current one.

Q3. Are there Doctor Buy products that create synergy when given together?

A3. We recommend 'Doctor Buy Heart Guard' and 'Immunity Card.' 'Doctor Buy Heart Guard' is designed to support both heart and immune system simultaneously, and 'Immunity Card' is synergistic with the above product, making a good combination.

Q4. How much should be given when starting?

A4. Each individual differs in digestion speed. For the first 3 days, please give half of the recommended daily amount, and if digestion and bowel movements are normal, adjust to the recommended amount.

Q5. From how many months can it be given?

A5. It can be safely given after 3 months of age. Considering the high sensitivity to fine dust and allergy triggers, it is good to start early for prevention.

Q6. What should be done if there is vomiting or diarrhea?

A6. If vomiting or diarrhea occurs, stop giving the product and rest for 2-3 days. When condition improves, try to reintroduce with food. It is good to allow absorption of nutrients gradually. If vomiting or diarrhea symptoms appear again after restarting, consult your veterinarian.

Q7. What is TF-343 made of?

A7. TF-343 is a complex plant extract combining 6 herbs including licorice, burdock, and chrysanthemum. Animal tests have confirmed that it protects respiratory mucosa damaged by fine dust, reduces inflammation, and promotes excretion of harmful substances.

Q8. Is there no need to worry about excessive intake?

A8. Yes, safety tests confirm sufficient margin for safe intake. GMP level safety tests show no possibility of genetic damage and minimal allergic reactions even with excessive intake. This means there is almost no concern about excessive intake in daily feeding.

Q9. If the pet’s condition improves, should the product be continued or is a break needed?

A9. Our product is safe for continuous use without breaks. However, since respiratory health requires ongoing care, long-term feeding is recommended.

Q10. Should it be given with time gap when using prescription drugs or other nutritional supplements?

A10. Most ingredients do not overlap, so in general, it can be safely given together. However, please allow a 2-hour interval if steroids or antibiotics are administered. If the pet has a special illness or medication, please consult your veterinarian.

Q11. Can it be given to cats as well?

A11. For cats, we recommend the specialized product ‘Doctor Buy Breath Cat Version.’

Q12. There is a translucent film on the product!

A12. Doctor Buy Breath does not use preservatives and uses a true transparent packaging... [translator's note: the image text cuts off here and is incomplete]

During the process, the air layer called "air pocket" that remains may cause a relatively insufficient moisture area, resulting in a translucent film-like appearance.

This is not a quality defect of the product, so it is safe to feed it to your pet. However, if feeding is difficult, please contact our customer service center for assistance after confirming the issue.

DOCTOR BY BREATH 3.0

Volume: 240g (8g x 30 sticks)

Ingredients and Content

Nutritional Components

• Crude Protein: 12.5% or more
• Crude Fat: 0.7% or more
• Calcium: 0.1% or more
• Phosphorus: 0.1% or more
• Crude Fiber: 1.0% or less
• Crude Ash: 3.5% or less
• Moisture: 85.0% or less

Ingredient Names
Purified water, enzymatically hydrolyzed chicken breast protein, tapioca starch, TF-343, Korean angelica, broccoli, sugar, propolis extract powder, ascorbic acid, chitosan, chlorophyllin, sodium ascorbate
(* The raw materials may vary depending on factory circumstances)

Expiration Date
Best before 24 months from manufacture
High temperature and long-term storage may reduce nutritional content. Store in a cool, dry place out of direct sunlight.

Key Ingredient Dosage (mg)

• TF-343: 2,796 mg or more

* This product is not a medicine and is not intended for treatment purposes.
* It is easily digestible as it does not cause gastrointestinal or allergic reactions.

Feeding Instructions

Product Information Notice

Product Name
Doctor By Breath

Ingredient Registration Number
No. 55VZN0180

Country of Manufacture
Republic of Korea

Manufacturer
Petone Co., Ltd.

Customer Service
031-281-0315

Precautions

1. Do not give to puppies younger than 3 months old.
2. Avoid humid places, pests, and direct sunlight. Store in a dry, cool place.
3. Adjust feeding amount according to the pet’s size and exercise level.
4. For pet snacks only; do not use as regular food or for training treats.
5. May not guarantee prevention or improvement functionality.
6. If external swelling or abnormal smell is detected, do not feed.
7. Feed immediately after opening the stick; refrigerate leftovers in a sealed container and finish feeding within the same day.
8. Be careful with the stick ends and cut edges as they can be sharp.
9. Do not heat the stick packaging in a microwave.
10. Do not feed to pets that are semi-wild or outside pets.
11. If allergic, check ingredients carefully before feeding.
12. If vomiting or diarrhea occurs after feeding, stop feeding and monitor condition. Consult a veterinarian if symptoms do not improve.