What is Bifidobacterium longum BB536?

Bifidobacterium longum BB536 is a clinically researched probiotic strain originally isolated from healthy infants. It is used in supplements and some foods to support digestive and immune health.

What are the main benefits of BB536?

BB536 is commonly used to support gut microbiota balance and bowel regularity and may help with digestive discomfort in some people. It is also studied for supporting immune function and reducing the risk or duration of some mild infections.

What is a typical dosage for Bifidobacterium longum BB536?

Common supplemental amounts are in the range of 1–10 billion CFU per day. The best dose can vary by product, age group, and the specific health goal.

Is BB536 safe for infants and children?

BB536 has been used in infant and pediatric contexts and is generally considered safe when used as directed. Parents should consult a pediatric clinician before starting probiotics, especially for preterm infants or medically complex children.

Who should be cautious with BB536?

People with severe immune compromise, those with central venous catheters, or those who are critically ill should seek medical advice before using probiotics. Stop use and seek care if you develop concerning symptoms after starting a probiotic.

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Vitamin B

Vitamin B1 (Thiamine)

Vitamin B2 (Riboflavin)

Vitamin B3 (Niacin)

Vitamin B5 (Pantothenic Acid)

Vitamin B6 (Pyridoxine)

Vitamin B7 (Biotin)

Vitamin B9 (Folic Acid)

Vitamin B12 (Methylcobalamin)

Vitamin B12 (Cobalamin)

Vitamin A & Carotenoids

Vitamin C

Vitamin D

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Vitamin K

Vitaminoids

Trimethylglycine (Betaine)

NMN (Nicotinamide Mononucleotide)

Pyrroloquinoline Quinone (PQQ)

D-Chiro-Inositol

Coenzym Q10 (Ubiquinone)

Betaine HCL

Nicotinamide Riboside

Vitamin B8 (Myo-Inositol)

Choline

Citicoline (CDP-Choline)

Coenzyme Q10 (Ubiquinol)

Calcium

Calcium Alpha-Ketoglutarate

Magnesium

Magnesium Bisglycinate

Magnesium L-Threonate

Trace Minerals

Copper (Bisglycinate)

Chromium Picolinate

Manganese (Bisglycinate)

Zinc

Pentadecanoic Acid (C15:0)

Phosphatidylserine

R-Alpha Lipoic Acid

Black Cumin Oil

Extra Virgin Olive Oil

Ceratiq wheat oil extract

Phospholipids

Algae Oil

Fish Oil

Conjugated Linoleic Acid

Gamma-Aminobutyric Acid

Alpha-Linolenic Acid

Gamma-Linolenic Acid

Omega-3

Docosapentaenoic acid (DPA)

Eicosapentaenoic acid (EPA)

Docosahexaenoic acid (DHA)

AminoMar

Acetyl-L-Carnitine

PABA (para-aminobenzoic acid)

Essential Amino Acids

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L-Theanine

Non-Essential Amino Acids

Beta-Alanine

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Taurine

Creatine (Hydrochloride)

L-Arginine Alpha-Ketoglutarate

Creatine (Monohydrate)

Akkermansia muciniphila

Lactobacillus Reuteri

Probiotics

Bifidobacterium longum BB536

Prebiotics

Stinging Nettle Extract

Pomegranate Polyphenols

Red Beet Extract

Pine Extract (Pycnogenol)

Oligomeric Proanthocyanidins (OPC)

Ashwagandha Root Extract

Methylsulfonylmethane (MSM)

Citrus Sinensis Extract

Horsetail Stem Extract

Flax Seed Extract

Sulforaphane Glucosinolate

Garlic Extract

Black Pepper

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Lovage

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Juniper Berry Extract

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White Kidney Bean Extract

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St. John’s Wort Extract

Japanese Knotweed Extract

Hydroxytyrosol/tyrosol

Olive extract

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Flavon Glycosides

Gentian Root Extract

Griffonia simplicifolia Extract

Ajuga Turkestanica Extract

Amaranthus Leaf Extract

Banaba Extract

Boswellia Extract

Capsaicin

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Celery Extract

Ceylon Cinnamon Extract

Chamomile Extract

Charantin

Chinese Goldthread Root Extract

Citrus Aurantium Extract

Cocoa Extract

Cyanotis Arachnoidea Extract

Fadogia Agrestis Extract

Garcinia Cambogia Extract

Goldenrod Extract

Green Tea Extract

Guarana Extract

Horse Chestnut Extract

Grapefruit Seed Extract

Grape Vine Leaf Extract

Green Tea Polyphenols

Epigallocatechin Gallate (EGCG)

Adaptogens

Cordyceps sinensis extract

Ginsenoside

Lion's Mane (Hericium erinaceus)

Ginseng Extract

Cat's Claw (Uncaria tomentosa)

Arjuna (Terminalia arjuna)

Tribulus Terrestris Extract

Rhodiola rosea

Panax Ginseng Extract

Mushrooms

Reishi Extract

Astragalus Polysaccharides

Hyaluronic Acid

Glucosamine Sulfate

Chondroitin Sulfate

Glucosamine Sulphate 2KCL

Bifidobacterium longum
BB536

Strong study situation·10/10

A higher score indicates better study conditions, but not necessarily effectiveness.

Clinically researched probiotic strain supporting gut and immune health, widely used in adults and infants.

Digestion & Gut Health Immune Booster Cholesterol Management Probiotic Antidiarrheal

dose range

1–10 billion CFU

Once daily or divided doses with meals.

Consumption

Take with food for optimal survival through the digestive tract.

Not fat-soluble.

Best time

Taking with or after meals enhances bacterial survival.

Description

Bifidobacterium longum BB536 is a probiotic bacteria isolated from healthy infants, extensively studied for its benefits on digestive and immune health in both adults and children. It is considered safe, with regulatory approvals and robust clinical data supporting its use.

benefits

Main effects with level of evidence

Strong

Note on evidence

Over 200 clinical studies, regulatory recognition (FDA GRAS, EFSA), and consistent benefit signals in various populations support its safety and efficacy, especially for digestive health.

Supports gut and digestive health

Strong

Shown to help alleviate symptoms of irritable bowel syndrome, improve bowel regularity, and support the balance of gut microbiota.

Particularly relevant for: Adults · Older adults · Children

3 · Kondo et al. 2019 (ScienceDirect)4 · Guidotti et al. 2024 (ScienceDirect)6 · WebMD Monograph: Bifidobacterium longum

Enhances immune function and reduces risk of some infections

Moderate

May lower incidence and duration of mild respiratory infections and stimulate key immune cell responses.

Particularly relevant for: Adults · Children

4 · Guidotti et al. 2024 (ScienceDirect)5 · Naito et al. 2024 (PubMed)

Safe for infants, helps with colic and gut issues

Moderate

Proven safety and efficacy in infant formulas; may help reduce colic, improve digestion, and reduce risk of necrotizing enterocolitis in preterm infants.

Particularly relevant for: Infants · Preterm infants

2 · Morinaga BB536 Product Information 6 · WebMD Monograph: Bifidobacterium longum 8 · EFSA Panel on Dietetic Products, Nutrition and Allergies (2011) Scientific Opinion on Bifidobacterium longum BB536

May support healthy cholesterol levels

Limited

Emerging research suggests potential for modest cholesterol lowering, though findings are preliminary.

Particularly relevant for: Adults

3 · Kondo et al. 2019 (ScienceDirect)

Safety & Information

Important safety information & known risks

For educational purposes only • not medical advice

Well-tolerated with extensive safety record, but live bacteria pose theoretical infection risks for vulnerable groups.

warning notices

GI discomfort such as gas or bloating may occur, especially when starting supplementation.
Severe adverse events are rare and usually restricted to high-risk (critically ill or immunocompromised) patients.
No toxicity or carcinogenicity seen in studies even at high supplemental doses.
Avoid use in severely immunocompromised individuals or those with central venous catheters unless under medical supervision.
Monitor for signs of infection in high-risk populations such as preterm infants or the critically ill.
Discontinue and seek medical attention if persistent high fever, chills, or other signs of sepsis occur.

Known interactions with medications