Bifidobacterium infantis — answers to B. infantis probiotic
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A species of bacteria naturally found in the human gut, particularly common in breastfed infants, and cultured for use as a probiotic supplement ingredient.
Why it’s used
Taken to support digestive comfort, particularly symptoms associated with irritable bowel syndrome (IBS).
What the evidence is for
easing some IBS-related digestive symptoms in trials of specific studied strains.
What the evidence says
A specific strain, Bifidobacterium infantis 35624, has been studied in randomized trials for IBS symptoms with some positive results, though findings are not universal across all strains sold under this species name and effect sizes are modest. The NIH Office of Dietary Supplements notes that probiotic effects are strain-specific, so results for one Bifidobacterium infantis strain do not necessarily apply to another sold under the same species name.
Context
Clinical research on this species has focused on specific proprietary strains rather than the species as a whole, and doses are measured in colony-forming units (CFU) rather than mass, which limits direct comparison across products.
Educational information, not medical or safety advice. Consult a professional for allergies or medical concerns.