Fundamental Joint & Cartilage Care

Dr. BY starts with you!

Dr. BY Official Online Seller

This seller is the original official seller of Dr. BY.

Please be sure to verify the official seller!

2026 Brand of the Year · 3 Consecutive Years Awarded

Pet Nutrition Supplement No. 1

*This product is not a medicine for treatment purposes.

TIP

Choosing Joint Supplements That Suit Our Child

Q. Is it okay to take "Doctor BY Joint" and "Hip & Joint Swift" together?

A. Yes, we recommend it. The two products have no ingredient overlap or interaction, so they complement knee and hip joints respectively, allowing for simultaneous care.

Since 2018

8 Years of Research Expertise and 10 Upgrades Achieved

Existing Doctor Byte Joint

Doctor Byte Joint 10.0

Please note!

'Doctor 바이 Joint 10.0' does not use meat proteins.

It is safe to feed even pets with meat allergies!

2 out of 3 customers repurchase!

If customers are not satisfied with the product, they won’t buy it again.
A repurchase rate of 65.7% proves ‘Doctor Buy’.

I felt the difference before and after feeding!

30-Day Review from the Nth Real Buyer

DOCTOR BY JOINT 10.0
70 tablets (80g)

All the neighbors are feeding it to their pets. Some even ask on the street if their elderly dog is doing well and get informed about it. My pet was struggling to walk even just a year ago.

- koho***

I purchase this product every time. I have three pets with hip dysplasia, and I only feed Doctor BY without surgery. It hasn’t gotten worse.

- byys****

Our dog has been consistently fed with Joint since the age of 9, and it has been over 5 years. When we went abroad for a month and couldn’t feed it, the symptoms of limping became severe. But after feeding again, after a month, it runs well again. I’m satisfied enough not to hesitate to buy this nutritional supplement daily.

- jisu*****

I have been feeding this for 3 years. It always eats it before the regular food, so I think the taste is good. Especially, after feeding this product, the symptoms of hair loss almost disappeared. I keep feeding it while seeing the effects.

- stle*****

My dog with bad hip joints has been eating this for several years. The dog also has bad arthritis, but it’s hard to stop feeding this product because it’s effective and it endures well. I will keep buying it even though it hurts sometimes.

- 8910******

* This review is based on actual customer reviews from the Naver Brand Store, collected after one month of feeding, covering parts of 2024-2025 reviews.
* This product is not a medicine intended for treatment purposes.

NAVER Most Reviews

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

*As of 2024.08.07, based on the number of reviews for dog joint & cartilage supplements in Naver Shopping search.

[Image: A collage of various photos showing different dogs with the "Doctor By Joint" product bottle, highlighting customer satisfaction and review authenticity from Naver Shopping.]

(Source: Naver Shopping review images)

Dr. BY × Amazon × Shopee

Amazon · Shopee Noticeable Brand, Dr.BY

Chosen by protectors in 13 countries worldwide

[Translator's note: Three gold medals indicating top rankings: Amazon USA 1st; Amazon Japan 1st for 22 weeks; Shopee Korea No.1]

Shopee Reviews

Amazon Reviews

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

Countries: USA, New Zealand, Canada, UK, Singapore, Malaysia, Philippines, Turkey, Brazil, Taiwan, Hong Kong, China, Vietnam

Rest assured!

The scent and color of Doctor Bio Joint may vary slightly depending on the cultivation environment of the natural ingredients used.

Dr. 바이 Joint does not contain any separate softening agents, so the surface may become firmer in the dry winter season than usual. This is not a quality issue, so please feel assured and continue to use it :)

A customized nutrition program for joint and cartilage care of companion animals!

Title of the invention

Formulation for the prevention of patella luxation and muscle strengthening exclusive for companion animals

*Patent registration: Formulation for the prevention of patella luxation and muscle strengthening exclusive for companion animals. The patent rights for Boswellia and complex materials are owned by AIVIO Co., Ltd., and unauthorized use is prohibited.

*Some parts of disease names with confidential information have been partially redacted.

1. Application of patented technology developed for joint health

Contains "Ligustrum Extract", which helps joint and cartilage health, and "Low-molecular-weight Collagen Protein", which aids in muscle strengthening.

2. Reliable manufacturing process

Meticulously manufactured in FDA, ISO, HACCP certified facilities.

3. Perfect palatability without rejection

With prebiotics for improved intestinal health UP!

[Health information for better understanding, not product information]

Major Causes of Joint Diseases in Pets

Jumping high! Slipping and sliding!

Pets with congenitally weak joints have a high probability of shoulder bone dislocation, especially small breed dogs.

• [Image: Icon of a dog jumping down stairs]

  Jumping on stairs

• [Image: Icon of a sitting overweight dog]

  Overweight

• [Image: Icon of a dog's hind leg showing muscle]

  Muscle deficiency

Inappropriate acquired habits further increase the risk of developing joint diseases!

Diseases with factors marked "O" have been blind processed.

Innisfree Green Tea Fresh Body Lotion

Daily moisturizing body lotion for smooth and hydrated skin

Volume: 300 ml

Key Features

• Deep moisturizing with Jeju green tea extracts
• Refreshing and non-sticky finish
• Light and smooth texture for easy absorption

How to Use

After showering, apply an appropriate amount evenly over the body and gently massage until absorbed.

Ingredients

Green tea extract, green tea seed oil, shea butter, glycerin, and other moisturizing ingredients.

[Image: A green translucent bottle with a green pump and label featuring the Innisfree logo and product name. Background includes green leaves and water droplets emphasizing freshness and hydration.]

[Ingredient information for better understanding, not product information]

Focusing on the Ministry of Food and Drug Safety approved joint & cartilage health functional ingredient "Jeonho Leaf Extract"!

Recognized by the Ministry of Food and Drug Safety

A reliable new ingredient

"Jeonho Leaf Extract" is an individually recognized ingredient for health functional foods!

Title of the invention

Formulation for prevention and treatment of joint disease including Jeonho Leaf Extract (WE-LAS) as an effective component

Title of the invention

Formulation for prevention and treatment of degenerative joint disease including Jeonho Leaf Extract (WE-LAS) as an effective component

This product is not a medicine intended for treatment purposes.

*Some disease names have been partially obscured for privacy reasons.

"Jeonho Leaf Extract" is a 100% plant-based raw material extracted only with effective ingredients!

[Information for better understanding, not product information]

Improvement Confirmed from 4 Weeks After Intake!

From 12 Weeks After Intake

Diseases with confounding factors were blinded as "O".

Total Score of Joint Pain, Stiffness, and Physical Function (Discomfort)

[Image: Graph showing changes at Baseline, 4 weeks, and 12 weeks. The placebo group shows slight worsening then some improvement, total 14.4% improvement. The extract group shows 25.7% improvement at 4 weeks and 50% improvement at 12 weeks.]

Placebo ▲
Extract of Phellodendron Bark ●

- 2.5% worsening at 4 weeks for placebo
- 14.4% improvement at 12 weeks for placebo
- 25.7% improvement at 4 weeks for extract group
- 50% improvement at 12 weeks for extract group

Baseline, 4 weeks, 12 weeks

<K-WOMAC Total Score>
[Source: Phellodendron Bark Extract Human Application Test Report, 2020]
* This academic material is copyrighted. This material is not subject to animal testing and should be referenced as safety information.
<This document is scientific evidence, and this product is not a medicinal drug for treatment.>
Diseases with confounding factors were blinded as "O".

[Raw Material Information for Better Understanding, Not Product Information]

Salt Ocausing Substance PGE₂ Concentration

Verification of Salt-O and Pain-O Inducing Enzyme Activation Inhibition! (Discomfort)

[Source: Jeonho Leaf Extract Human Application Test Result Report, 2020]

* This academic data is copyrighted. / This data is not for advertising purposes and is used for safety reference only.
* The academic paper is scientific evidence, and this product is not a medicinal drug for treatment purposes.
* Diseases containing 'O' are blinded as 'O'.

[Ingredient information for understanding, not product information]

Joint Cartilage Component

Collagen type II

Increase in cartilage component confirmed!

[Source: Jeonholeaf Extract Human Application Test Report, 2020]

* This academic data is copyrighted. / This data is not intended for pet application, please refer to it as safety information only.
* This is scientific data from academic literature and is not a medicinal product for treatment purposes.

[Raw material information to aid understanding, not product information]

Increase in Joint Cartilage Components

Proteoglycan Synthesis

< Safranin O Staining / Histological Staining Experiment >

• Femur: located between femoral condyle and tibial plateau
• Tibia: from lower part of tibial plateau to ankle bone

In the group administered with ‘Cnidium Officinale Extract,’ joint cartilage loss decreased and the progression of damage was alleviated!

[Reference: Lee et al. (2018), Biomedicine & Pharmacotherapy]

* This academic material is copyrighted. / This data is not for companion animals, and is for safety reference only.

<It is scientific evidence from academic literature, not a medical product for treatment.>

Diseases listed with "O" were blinded during evaluation.

[Raw material information to aid understanding, not product information]

Harmful Substance Inspection for Pets Completed

Inspection Completed

[Inspection institution: Nechurecur E01]
This data is not for pets, but please refer to it as safety information.

[Ingredient information for understanding, not product information]

Doctor Bio Joint 10.0

Increased Absorption “Low Molecular Weight Whey Protein”

Quadriceps

(Quadriceps / BW (mg/g))

[Image: A bar graph showing increased values for low molecular weight whey protein compared to IM]

Quadriceps

(Thigh four head muscle)

Gastrocnemius

(Calf muscle)

Soleus

(Flat calf muscle)

* The image is for reference to understand the positions of quadriceps, gastrocnemius, and soleus muscles and is unrelated to effects or efficacy.

Gastrocnemius

(Gastrocnemius / BW (mg/g))

[Image: A bar graph showing increased values for low molecular weight whey protein compared to IM]

Soleus

(Soleus / BW (mg/g))

[Image: A bar graph showing increased values for low molecular weight whey protein compared to IM]

Increased muscle weight in the thigh quadriceps, gastrocnemius, and soleus!

[Source] Soluble Whey Protein Hydrolysate Ameliorates Muscle Atrophy Induced by Immobilization via Regulating the PI3K/Akt Pathway in C57BL/6 Mice. Nutrients 2020, 12, 0

* Copyright exists for low molecular weight whey protein academic data. (For understanding only; excludes Normal group, WP-S 400mg/800mg)

This academic literature is scientific evidence; this product is not a medicinal product intended for treatment.

[Health information to aid understanding, not product information]

Our child's cartilage is the only one in a lifetime

Even if 70% is worn down, there are no symptoms!

The thickness of a puppy's knee joint cartilage is 0.67mm.
Cartilage wear causes damage to the only cartilage for life,
leading to pain, swelling, and inflammation (discomfort).

[Image: Photo of a small dog with a red highlight on the knee area to indicate discomfort]

[Source: JAVMA · Vol 249 · No. 2 · July 15, 2016/etMed(Auckl). 2018 May 31;9:23-32 / VeterinaryWorld, 2024 Mar 7;17(3):550-557]
Diseases with "O" are blinded processed to protect patient identity.

[Health information to aid understanding, not product information]

Even after surgery, when 100% complete recovery is difficult,

Customized temporomandibular joint care is necessary!

[Source: JAVMA · Vol 249 · No. 2 · July 15, 2016 / etMed(Auckland). 2018 May 31;9:23-32 / VeterinaryWorld, 2024 Mar 7;17(3):550-557]

Diseases with coexisting conditions are treated as "0" to avoid bias.

Dr. BY

6 FREE

• NO Meat
• NO Artificial Coloring
• NO Flavor Enhancers
• LOW Allergy
• NO By-products
• LOW Sodium

Dr. BY joints are made honestly.
They do not contain grains that increase calories,
allowing you to feed your pet more healthily.

Dr. Bi Joint minimizes calories to enable consistent intake for nutritional management!

Safe because it’s made from natural ingredients!

Doctor BY Joint, made meticulously

[Image: Two purple bottles labeled "DOCTOR BY JOINT 10.0" with black tablets spilling out, and a close-up of a hand holding one black tablet]

Not artificial coloring.

Colored naturally with chlorella as it is.

Self-quality inspection conducted every 3 months!

[Image: Three certificates of analysis with a red stamp reading "Inspection Completed" across them]

"Dr. Buy Joint" is produced in a HACCP-certified facility.

PRODUCT

Son & Park Beauty Water (150ml / 5.07 fl.oz.)

Key Features

• A makeup setting toner
• A cleanser and exfoliator
• Natural AHA exfoliating ingredient
• Pore tightening
• Calming and refreshing effect on skin

Directions for Use

After cleansing your face, soak a cotton pad with a moderate amount and gently wipe across the skin for makeup setting and exfoliation.

Ingredients

Water, Butylene Glycol, Glycerin, Citrus Paradisi (Grapefruit) Peel Oil, Citrus Aurantium Bergamia (Bergamot) Fruit Oil, Pyrus Malus (Apple) Fruit Extract, Cucumis Melo (Melon) Fruit Extract, Pyrus Malus (Apple) Fruit Water, Citrus Limon (Lemon) Peel Extract, Citrus Medica Limonum (Lemon) Peel Oil, Citric Acid, Salicylic Acid, Sodium Hyaluronate, Calendula Officinalis Flower Extract, Green Tea (Camellia Sinensis) Leaf Extract, Chamomilla Recutita (Matricaria) Flower Extract, Rosmarinus Officinalis (Rosemary) Leaf Extract, Lysolecithin, Sodium PCA, Tocopheryl Acetate, Allantoin, Guar Hydroxypropyltrimonium Chloride, Ethylhexylglycerin, Panthenol, Sodium Metabisulfite

Bonus

Free cotton pads included for convenient application

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

'Dr.Buy Affiliated'

Developed by a team of veterinary doctors and PhD researchers

In a government-recognized ‘in-house corporate research institute’, Dr.Buy conducts direct research using research equipment owned by Dr.Buy.

[Image: Certification document and photos of veterinary research and lab work with a dog]

Manufacturing Process

[Image: Several photos showing the manufacturing process in a lab including staff working in clean environments, measuring ingredients, and machinery for production]

Patents   TCB Excellent Technology Company Certification   Corporate Research Institute Certification   Venture Company Certification
U.S. FDA Facility Certification   ISO 9001 Certification   ISO 14001 Certification   HACCP Certification

Dr.Buy Joint does not add artificial colors or sodium.

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

Feel safe to feed without allergy concerns!

Veterinarians & Master’s/PhD clinical researchers directly answer!

'Doctor Buy Joint' Frequently Asked Questions (FAQ)

Q1. Should I give it before or after meals? Can I give it all at once?

A1. It’s okay to give it either before or after meals! The daily recommended amount can be given at once or divided between morning and evening. Consistency over time is more important than timing.

Q2. When should I start giving joint supplements?

A2. You can start giving it from 3 months of age. However, if it is for preventive purposes, we recommend starting from 5 to 6 months without interruption. Early management is crucial especially for breeds prone to weak knees like Maltese, Pomeranian, and Poodle.

Q3. The pet’s condition has improved, should I keep giving it? Do I need to take breaks?

A3. This product is safe to give consistently without breaks! Joint care is more effective when maintained continuously rather than short-term, so consistent administration is recommended.

Q4. Is it okay to give this with other supplements?

A4. Doctor Buy products do not have overlapping ingredients, so there is no problem giving them together. However, other brands may have overlapping ingredients, so please check the label or consult your veterinarian.

Q5. Are there Doctor Buy products that have synergy when given together?

A5. For intensive joint care, try 'Hip & Joint Support'. If muscle strength management is needed, try giving it together with 'Chyoodan Protein'.

Q6. Can I give this instead of medicine (prescription drugs)?

A6. Supplements cannot replace medicine. If your pet is on prescription drugs, please consult your veterinarian before giving supplements.

Q7. My pet doesn’t want to eat it. What should I do?

A7. Mixing it with food or snacks can reduce refusal. If your pet still refuses, please contact our customer service. We will promptly assist with returns or exchanges if needed.

Q8. Can cats eat this too?

A8. There are no ingredient issues, but the dosage is based on dogs, so it is not recommended for cats.

DOCTOR BY JOINT 10.0

Dr. BY

70 tablets (80g)

Contents

Net weight: 80g (tablet size: 1cm x 1cm)

* This product is not a medicine intended for treatment.

* It is safe to consume without concerns for gastric or liver side effects.

Feeding Instructions

Product Information Disclosure