Bifidobacterium infantis (Strain BI211) – Probiotic bacterial strain used to support gut flora and digestion
Bifidobacterium infantis (often abbreviated as B. infantis, specifically referring to strain BI211) is a lactic acid-producing bacterial strain that naturally resides in the human gastrointestinal tract. In dietary supplements, this probiotic strain is used to support a healthy balance of intestinal flora (the microbiome), aid digestion, and promote normal bowel function as part of a balanced lifestyle.
Characteristics, Origin, and Composition
B. infantis is one of the first and most prominent “friendly” bacteria to colonize the neonatal gut, especially in breastfed infants. It has co-evolved to be highly specialized in digesting complex sugars found in breast milk (Human Milk Oligosaccharides, or HMOs), allowing it to outcompete harmful pathogens (competitive exclusion) and assist in the maturation of the early immune system. Although its name (infantis) refers to infants, this bacterium is highly valuable for adults as well. Strain BI211 is a specific, isolated, and cultivated variant of this species, selected for its ability to survive passage through the gastrointestinal tract and its specific health-promoting properties. In addition to breaking down complex carbohydrates, B. infantis produces important substances in the gut, such as folic acid and nicotinic acid.
Use in Dietary Supplements
B. infantis (strain BI211) is commonly used:
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In digestive comfort probiotic formulas, particularly for individuals (often women) suffering from Irritable Bowel Syndrome (IBS), as this strain has been shown to significantly alleviate symptoms such as bloating, abdominal pain, and cramping.
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In infant and pediatric supplements, to support the healthy development of the microbiome and immune system.
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In general multi-strain probiotics (often combined with B. longum or Lactobacillus species) and prebiotics, to promote overall intestinal health and regular bowel movements.
The dosage is not measured in milligrams, but rather in billions of CFUs (Colony Forming Units). Depending on the product, a typical daily dose ranges from 1 to 10 billion CFUs.
Everyday Use and Well-Being
When used in appropriate amounts, B. infantis BI211 is an exceptionally safe and effective probiotic strain, particularly for those struggling with bloating or digestive discomfort. Dietary supplements do not replace proper nutrition or medical treatment. Individuals with severely compromised immune systems or critical medical conditions should consult a doctor or other qualified health professional before using live bacteria supplements (probiotics).
