Bifidobacterium bifidum for Functional Dyspepsia

B. bifidum YIT 10347 showed improvement in acid-related and gas-related dyspepsia symptoms in Japanese studies. Mixed results in Western populations.

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The Bottom Line

B. bifidum YIT 10347 showed improvement in acid-related and gas-related dyspepsia symptoms in Japanese studies. Mixed results in Western populations.

Key Study Findings

Controlled Clinical Trial n=54 3.0 weeks

[Clinical efficacy of a modern probiotic for the correction of intestinal microflora in patients with …

Dose: 350 mg vs: None Outcome: IBS symptom improvement Effect: None None

Population: Irritable bowel syndrome with diarrhea and antibiotic-associated diarr

Randomized Controlled Trial n=100 4 weeks Double-blind

Bifidobacterium bifidum YIT 10347 fermented milk exerts beneficial effects on gastrointestinal discomfort and symptoms in …

Dose: 100 mL/day fermented milk vs: Placebo fermented milk Outcome: GI symptom scores (m-FSSG, GSRS) Effect: None None

Population: Healthy Japanese adults with GI discomfort

Other 4.0 weeks

Continuous consumption of fermented milk containing Bifidobacterium bifidum YIT 10347 improves gastrointestinal and psychological symptoms …

Dose: 100 mL/day vs: None Outcome: None Effect: None None

Population: men

Randomized Controlled Trial Double-blind

Association of a probiotic to a Helicobacter pylori eradication regimen does not increase efficacy or …

Dose: None vs: Placebo + eradication regimen Outcome: H. pylori eradication rate and adverse effects Effect: None None

Population: Adults with H. pylori infection

Key Statistics

Studies

500

Participants

↑

Positive

Grade

Referenced Papers

[Clinical efficacy of a modern probiotic for the correction of intestinal microflora in patients with irritable bowel syndrome with diarrhea … Other

Voprosy pitaniia 2023

Bifidobacterium bifidum YIT 10347 fermented milk exerts beneficial effects on gastrointestinal discomfort and symptoms in healthy adults: A double-blind, randomized, … RCT

Journal of dairy … 2018 51 citations

Continuous consumption of fermented milk containing Bifidobacterium bifidum YIT 10347 improves gastrointestinal and psychological symptoms in patients with functional gastrointestinal … Other

Bioscience of microbiota, … 2015 40 citations

Association of a probiotic to a Helicobacter pylori eradication regimen does not increase efficacy or decreases the adverse effects of … RCT

BMC gastroenterology 2013 70 citations

Dosage & Usage

mg = milligrams · mcg = micrograms (1,000× smaller) · IU = International Units

Commonly Used Dosages

general:: 1-10 billion CFU/day
dyspepsiasupport:: 1 billion CFU/day (YIT 10347 strain)

Upper limit: Well-tolerated up to 10 billion CFU/day in clinical trials

Dosages Studied in Research

Dosage	Duration	Effect	N
350 mg	3.0 weeks	Positive	54
100 mL/day fermented milk	4 weeks	Positive	100
100 mL/day	4.0 weeks	Positive	--
None	--	Neutral	--

Best taken: On an empty stomach or before meals

Safety & Side Effects

Reported Side Effects

⚠ Mild gas and bloating during initial use
⚠ Occasional abdominal discomfort
⚠ Rare loose stools
⚠ Very rare: bacteremia in immunocompromised individuals

Known Interactions

● Antibiotics (may reduce probiotic viability; space dosing 2 hours apart)
● Immunosuppressants (use with caution in immunocompromised patients)

Tolerable upper intake: Well-tolerated up to 10 billion CFU/day in clinical trials

Always consult your healthcare provider before starting any supplement.

Frequently Asked Questions

Does Bifidobacterium bifidum help with Functional Dyspepsia?

Based on 4 studies with 500 participants, there is limited but promising evidence that Bifidobacterium bifidum may support Functional Dyspepsia management. Our evidence grade is C (Some Evidence).

How much Bifidobacterium bifidum should I take for Functional Dyspepsia?

Studies have used various dosages. A commonly studied range is 1-10 billion CFU/day. Always consult your healthcare provider before starting any supplement regimen.

Are there side effects of Bifidobacterium bifidum?

Reported side effects may include Mild gas and bloating during initial use, Occasional abdominal discomfort, Rare loose stools, Very rare: bacteremia in immunocompromised individuals. Most side effects are mild and dose-dependent. Consult your doctor if you experience any adverse reactions.

How strong is the evidence for Bifidobacterium bifidum and Functional Dyspepsia?

We rate the evidence as Grade C (Some Evidence). This rating is based on 4 peer-reviewed studies with 500 total participants. The overall direction of effect is positive.

Related Evidence

Other ingredients for Functional Dyspepsia

Ginger B Deglycyrrhizinated Licorice (DGL) C

Quick Verdict

B. bifidum YIT 10347 showed improvement in acid-related and gas-related dyspepsia symptoms in Japanese studies. Mixed results in Western populations.

Evidence Strength52%

Moderate confidence

Study Breakdown

RCT (2)Meta (0)Other (2)

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FDA Disclaimer: These statements have not been evaluated by the Food and Drug Administration. The products and information on this website are not intended to diagnose, treat, cure, or prevent any disease. The evidence grades presented are based on our analysis of published peer-reviewed research and do not constitute medical advice. Always consult your healthcare provider before starting any supplement regimen.