Yellow box of YoungLong YeastBiotics Kids banana flavor probiotic supplement
Peeled banana with two pieces of dark chocolate against a light background
Box of YeastBiotics Kids chocolate flavor probiotics supplement with bunny logo
Smiling child holding probiotic supplement in home setting, promoting kids probiotics benefits.
Pharmacist holding young child in his arms, text focuses on sensitive gut supplements for kids.
YoungLong Yeast Biotics Kids supplement box on yellow background, highlighting high sales and satisfaction for children's immunity and gut health in Korea.
Supplement benefits infographic with bear, featuring guaranteed 5 billion CFU, no fillers, no refrigeration, and clean label.
Young girl eating supplement stick pack at home, smiling on sofa, kids health product.
Infographic listing child digestive health issues: constipation, loose stools, picky eating, illness.
Cute Boulardii yeast character promoting gut immunity and digestive balance benefits.
Child's hand flushing toilet, infographic on gentler toilet time, increased stool frequency, and improved stool consistency for kids.
Infographic showing shield and upward arrow symbolizing immune system, with text about clinically verified science boosting natural antibodies for immune barrier support.
Probiotic supplement benefits infographic with top quality raw materials and a cute bear illustration.
3D illustration of human intestines showing probiotic gut care percentages for children
Smiling sun cartoon promoting Vitamin D immunity supplement for kids, 400IU daily value
Smiling child in overalls reaching for probiotic supplement stick in a bright home setting
Creamy Banana and Sweet Cocoa kids gut health supplements with banana and chocolate illustrations
Supplement facts label showing serving size, calories, vitamin D, and probiotics content.

YeastBiotics Kids

$40.55 
0% off

Ultimate Gut Protection & Immunity Shield For Kids

Pharmacist developed probiotic for children, designed to address both intestinal barrier damage and microbial imbalance—the root causes of gut issues and weakened immunity. Formulated with Saccharomyces boulardii, a resilient probiotic that survives antibiotic exposure, and a precise blend of 17 strains, it delivers uncompromising immune defense and supports healthy bowel function.

Title

Clinical Data
Title

Ingredients

1. Banana Flavor

 

Main Ingredients
Saccharomyces cerevisiae var. boulardii (Austria), Lactobacillus acidophilus (U.S.A), Lacticaseibacillus rhamnosus (South Korea), Limosilactobacillus reuteri (U.S.A), Bifidobacterium longum (U.S.A), Bifidobacterium lactis (U.S.A), Lactobacillus gasseri (Denmark), Bifidobacterium bifidum (U.S.A), Lactoplantibacillus plantarum (South Korea), Baby mixed probiotics (U.S.A), Nosereliev probiotics (Taiwan)

 

Sub Ingredients
Dried yeast/Vitamin D (U.S.A), Organic glucose (Pakistan), Organic agave inulin (Mexico), Organic alpha rice powder (South Korea), Maple syrup powder (Canada), Colostrum protein powder (India), Organic 15-fruit & vegetable mixed powder (U.S.A), Banana extract powder (South Korea), Xylitol (Finland), Fructooligosaccharide (South Korea)
 

Flavor
Banana flavor coton [Dextrin (South Korea), Gum Arabic (France), Alcohol, Purified water, Natural flavor]

 

2. Cocoa Flavor

 

Main Ingredients
Saccharomyces cerevisiae var. boulardii (Austria), Lactobacillus acidophilus (U.S.A), Lacticaseibacillus rhamnosus (South Korea), Limosilactobacillus reuteri (U.S.A), Bifidobacterium longum (U.S.A), Bifidobacterium lactis (U.S.A), Lactobacillus gasseri (Denmark), Bifidobacterium bifidum (U.S.A), Lactoplantibacillus plantarum (South Korea), Baby mixed probiotics (U.S.A), Nosereliev probiotics (Taiwan)

 

Sub Ingredients
Dried yeast/Vitamin D (U.S.A), Organic glucose (Pakistan), Organic agave inulin (Mexico), Organic alpha rice powder (South Korea), Maple syrup powder (Canada), Colostrum protein powder (India), Organic 15-fruit & vegetable mixed powder (U.S.A), Cocoa flavor powder (South Korea), Xylitol (Finland), Fructooligosaccharide powder (South Korea), Vegetable cream powder (South Korea)
 

Flavor
Banana flavor coton [Dextrin (South Korea), Gum Arabic (France), Alcohol, Purified water, Natural flavor], Natural cocoa powder flavor (South Korea)

Caution

Safety Information
YoungLong Yeast Biotics Kids is a premium probiotic formula designed by pharmacists for children's sensitive guts. Please review the following safety guidelines for the best results.

 

Who should be cautious?
Consult a healthcare professional before use if your child has specific allergies or hypercalcemia.

 

Possible side effects
Individual responses may vary. Some children may experience temporary abdominal bloating or intestinal gas. If any unusual symptoms persist, consult a healthcare professional.

 

Precautions for use

1) Antibiotics Interaction: If your child is taking antibiotics, ensure a sufficient time interval between the antibiotic dose and probiotic intake to maximize survival.
2) pH Sensitivity: Foods or beverages that significantly lower gastric acidity (pH) may affect the survival of probiotics. Use caution with highly acidic intake.
3) Daily Dosage Control: Please ensure children do not consume the product arbitrarily. Stick to the recommended dosage of one stick per day.

 

Allergen Information
Manufactured in a facility that also processes:
Wheat, buckwheat, peanuts, mackerel, crab, shrimp, tomatoes, walnuts, chicken, beef, squid, peaches, shellfish (including oysters, abalone, and mussels), pine nuts, and sulfites.

FAQ

Q1. How should my child take this product?
Take 1 stick daily. The powder can be taken directly or with a sufficient amount of water, preferably before meals. For optimal absorption, we recommend taking it in the morning after waking.

 

Q2. How long should my child take it?
For best results, consistent daily intake is recommended to support long-term gut health and immune function.

 

Q3. Can pregnant or breastfeeding women take this?
Yes, this product is safe for consumption during pregnancy and breastfeeding.

 

Q4. What is the suitable age for this product?

Suitable for children aged 13 months and above.
Title
Title

Korean Pharmacist Manufacturing

100,000+ cumulative reviews

95% buyer satisfaction

Pure & Natural Ingredients

No Unnecessary Additives

Comprehensive Safety Test

Korean Pharmacist

Manufacturing

100,000+

Cumulative reviews

95% buyer

Satisfaction

Pure & Natural

Ingredients

No Unnecessary

 Additives

Comprehensive

Safety Test

Protect Your Child’s Gut Health, Deliciously

Developed by Pharmacists & Parents

Contains S. boulardii Yeast

Kid-Favorite Flavors
Alt image

Protect Your Child’s
Gut Health, Deliciously.

Developed by Pharmacists & Parents

Contains S. boulardii Yeast

Kid-Favorite Flavors

Key Point 01

Finally, A Probiotic That Actually Survives

Antibiotics don’t just eliminate harmful bacteria. 

Most probiotics are bacterial strains—and can be wiped out by antibiotics.

● Regular Bacteria Probiotics

99% Mortality

Destroyed by Antibiotics

vs

● S. Boulardii Yeast

100% Resistant

Active even during Medication

Our Choice : Boulardii

Probiotics are Bacteria, Boulardii is Yeast

Antibiotics attack bacteria (Probiotics), but Yeast (Boulardii) is resistant.

Strong enough to withstand stomach acid & bile

Sticks to the wall and helps expel harmful bacteria

Creates a fertile environment for beneficial bacteria

Overwhelming Survival Proven by Science

Regular probiotics vanish under antibiotics. Our S. Boulardii Yeast stays alive and strong where others fail.

* Source : Alimentary Pharmacology & Therapeutics / Mediogen Tech Data

Antibiotic Resistance

100%

Naturally Resistant as a Yeast
Title

Gastric Acid Survival

Over 95%

Safe Passage to the Gut

Key Point 02

Full-Spectrum Care

We mapped every inch to ensure total intestinal harmony.

55.50%

Small Intestine : Specialized Lactobacillus blend to maximize nutrient absorption.

40.00%

Large Intestine : Bifidobacterium focus for smooth movements and toxin clearance.

Small Intestine (Lactobicillus)

·  L. reuteri  ·  L. gasseri  

·  L. acidophilus  ·  L. rhamnosus  

·  L. plantarum  ·  L. salivarius  

·  L. paracasei

Large Intestine (Bifidobacterium)

·  B. longum  ·  B. lactis  ·  B. bifidum  

·  B.animalis ssp.lactis  ·  B. breve

Other Strains

·  Lactococcus lactis  

·  Streptococcus thermophilus

Why should my child take probiotics?

Stool Frequency

+1.3 times/week

Significant Increase in Movements

Stool Consistency

Softer & Smoother

Proven Comfort for Kids

* Source : Nutrients / Journal of Pediatrics (Meta-analysis on pediatric functional constipation)

Mom, Can I Have 
One More?

No more morning battles.

Made with real banana and cocoa, our probiotics are so delicious your child will remind you it's time for their probiotics.

How Can It Be This Delicious with ZERO Artificial Additives?

We swapped sugar for Xylitol and ditched the 6 common chemical fillers. Because your child's safety is our non-negotiable standard.

CLEAN LABEL

6-FREE 

NO SUGAR

NO

MAGNESIUM STEARATE

NO

SILICON DIOXIDE

NO

ARTIFICIAL COLORS

NO

ARTIFICIAL FLAVORS

NO

SYNTHETIC SWEETENERS

Key Ingredients

Probiotics

36 billion CFU added · 5 billion CFU guaranteed.

Helps with bowel movements and normal intestinal health.

Vitamin D

10μg (400 IU) added · 100% Daily Value Guaranteed.

All-in-one immunity and bone support.

Key Ingredients

Expertly Formulated for Complete Gut Synergy

Step 1

Prebiotics

(Fructooligosaccharide)

Role : Essential nutrients that nourish probiotics and support their growth.

Step 2

Probiotics

(S. Boulardii + 17 Strains)

Role : Deliver beneficial microorganisms to help restore and balance the gut microbiota.

Step 3

Postbiotics

(L. Plantarum Lysates)

Role : Active metabolites that complete the synergy for Immediate Improvement.

Every Strain, Thoughtfully Selected

We selected strains that feel like home to the human body. We ensure natural adaptability and superior safety for your child's sensitive gut.

Breast Milk Derived

A mother's first gift for immunity.

Kimchi Derived

K-Heritage Fermentation Mastery.

Key Point 03

We Never Compromise on What Goes Inside

World-Class Origin (Denmark)

Chr. Hansen : The global pioneer in pure, high-potency probiotics.

World-Class Origin

DuPont Danisco : USA-based leader in elite probiotic research.

Advanced K-Tech

Mediogen : Patented SP coating technology for safe arrival.

Rest Easy
They Arrive Alive

MedioGen's Patented SP Double Shield ensures 100% safe passage to your child’s gut.

1st : Environmental Protection

Blocks Temperature & Humidity

2nd : Internal Protection

Defeats Acid & Bile

Check the
Guaranteed CFU

Input numbers don’t matter—survival does.

 

We start with 36 Billion to ensure 5 Billion remin alive at the time of consumption.

Input Amount : Not the final count

Title

REAL GUARANTEED POTENCY

5,000,000,000

Lives until the gut

Title

Key Point 04

Stop the Cycle of Frequent Illness

Frequent antibiotics wipe out beneficial bacteria.

We've specifically combined Vitamin D to resilient S. boulardii's to support immune function and strengthen your child’s natural defenses.

Step 1 : Guardian

S. Boulardii Yeast

Replaces bacteria lost to antibiotics.

Step 2 : Fortify

Vitamin D (Immunity)

Ignites the body's primary defense system.

Rebuilding a Strong Gut Barrier

Tight Junctions

S. boulardii strengthens the Tight Junctions of the gut lining, preventing toxins from entering.

Boosts Protective Antibody (IgA)

Research confirms that S. Boulardii promotes the secretion of IgA, the body's primary defense for the gut environment.

* Source : "Saccharomyces boulardii CNCM I-745 influences the gut-associated immune system", Journal of Clinical Gastroenterology

* Based on raw material (S. Boulardii) research, not the finished product.

What are NosRelieve Probiotics?

Proven Efficacy in Allergic Rhinitis Relief

We've included NosRelieve Probiotics proven for its role in soothing overactive nasal responses.

* Source: Clinical observation of active probiotics in the treatment of allergic rhinitis (2017)

Kids Love the Taste!
Say Goodbye to No.

Turn daily routines into their favorite moment of the day.

Creamy Banana

Naturally Sweet & Smooth

Sweet Cocoa

Rich & Kid-Favorite

Kids Love the Taste!
Say Goodbye to No.

Turn daily routines into their favorite moment of the day.

Creamy Banana

Naturally Sweet & Smooth

Sweet Cocoa

Rich & Kid-Favorite

Trusted by Discerning parents in South Korea

Elite families prioritize gut health as the foundation of strong immunity and lifelong excellence.

That's why many parents in Korea choose YOUNGLONG probiotics.

Foundation

Healthy

Gut

Shield

Strong

Immunity

Goal

Long-Term

Health

A Stronger Gut,
A Smarter Probiotic

Support your child's gut health and immunity

— delivered in the flavors they love.

A Stronger Gut,
A Smarter Probiotic

Support your child's gut health and immunity
— delivered in the flavors they love.

Pairs well with

Title
Yellow box of YoungLong YeastBiotics Kids banana flavor probiotic supplement
Peeled banana with two pieces of dark chocolate against a light background
Box of YeastBiotics Kids chocolate flavor probiotics supplement with bunny logo
Smiling child holding probiotic supplement in home setting, promoting kids probiotics benefits.
Pharmacist holding young child in his arms, text focuses on sensitive gut supplements for kids.
YoungLong Yeast Biotics Kids supplement box on yellow background, highlighting high sales and satisfaction for children's immunity and gut health in Korea.
Supplement benefits infographic with bear, featuring guaranteed 5 billion CFU, no fillers, no refrigeration, and clean label.
Young girl eating supplement stick pack at home, smiling on sofa, kids health product.
Infographic listing child digestive health issues: constipation, loose stools, picky eating, illness.
Cute Boulardii yeast character promoting gut immunity and digestive balance benefits.
Child's hand flushing toilet, infographic on gentler toilet time, increased stool frequency, and improved stool consistency for kids.
Infographic showing shield and upward arrow symbolizing immune system, with text about clinically verified science boosting natural antibodies for immune barrier support.
Probiotic supplement benefits infographic with top quality raw materials and a cute bear illustration.
3D illustration of human intestines showing probiotic gut care percentages for children
Smiling sun cartoon promoting Vitamin D immunity supplement for kids, 400IU daily value
Smiling child in overalls reaching for probiotic supplement stick in a bright home setting
Creamy Banana and Sweet Cocoa kids gut health supplements with banana and chocolate illustrations
Supplement facts label showing serving size, calories, vitamin D, and probiotics content.

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