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Bacteria

Bifidobacterium bifidum

Bifidobacterium bifidum is a bacterial species that lives naturally in the human gut, especially in infants, and is used in probiotic products.

Gut HealthImmune Support

What it is studied for

The strongest rated effects first. Bars show the size of the effect, the letter grades the evidence, and each rating lists the studies behind it.

DiarrheaStrongA3 studies
Microbiome healthGut HealthModerateA3 studies
Bloating & gas reliefGut HealthModerateBNo linked study
Immune SupportModerateBNo linked study
Gut healthModerateBNo linked study
Digestive sensitivityGut HealthModerateBNo linked study
All 7 rated effectsGrouped by health goal, with the publications behind each rating

Why does the strain name matter?

Bifidobacterium bifidum is the species; MIMBb75 identifies a particular strain studied for irritable bowel syndrome (IBS). Probiotic names include genus, species and strain, so the full name helps connect a product to its research. 1 2

Key studies

The most recent publications linked to Bifidobacterium bifidum's ratings.

Effect of Bifidobacterium bifidum G9-1 on the Intestinal Environment and Diarrhea-Predominant Irritable Bowel Syndrome (IBS-D)-like Symptoms in Patients with Quiescent Crohn’s Disease: A Prospective Pilot Study2023The Short-Term Efficacy of Bifidobacterium Quadruple Viable Tablet in Patients With Diarrhea-Predominant Irritable Bowel Syndrome: Potentially Mediated by Metabolism Rather Than Diversity Regulation2022Meta-analysis of the effects of Bifidobacterium preparations for the prevention and treatment of pediatric antibiotic-associated diarrhea in China.2017Randomized controlled trial on the impact of early-life intervention with bifidobacteria on the healthy infant fecal microbiota and metabolome.2017Consumption of a Bifidobacterium bifidum Strain for 4 Weeks Modulates Dominant Intestinal Bacterial Taxa and Fecal Butyrate in Healthy Adults2016
All 6 studiesEvery publication linked to Bifidobacterium bifidum

Why people take it

Gut Health25.4%
Immune Support25.3%
Essential Health22.5%
Detox9.8%
Energy7.1%
Women's Hormones2%

SuppCo community snapshot, 2026-09-28. Reasons for use are not evidence that it works.

Questions people ask

Does a higher count guarantee a better match?

The strain name, storage instructions and viable count at expiry provide different pieces of label information. 2

Does it rebuild everyone’s gut flora?

The German consumer advice service says individual microbiome responses and health benefits cannot be predicted reliably. 3

Are microbiome changes necessarily beneficial?

The healthy-adult trial measured bacterial and butyrate changes; those measurements alone do not demonstrate a health improvement. 4

Sources

  2. Probiotics: Fact Sheet for Consumers NIH Office of Dietary Supplements