Bifidobacterium Longum Infantis Nls
Also known as: B. infantis, Bifidobacterium infantis, Bifidobacterium longum subsp. infantis
Overview
*Bifidobacterium longum subsp. infantis* is a beneficial probiotic bacterium predominantly found in the intestines of breastfed infants. It plays a vital role in digestion by utilizing human milk oligosaccharides, promoting a healthy gut microbiota. This subspecies has been shown to offer protective benefits against necrotizing enterocolitis (NEC) and late-onset sepsis (LOS) in preterm infants, with various clinical trials and systematic reviews backing its efficacy. As a dietary supplement, it is primarily used in infant formulas and probiotic preparations aimed at enhancing gut health in vulnerable populations, such as premature infants. With the potential to improve health outcomes significantly, the presence of *B. infantis* in the microbiota is critical, particularly during early life stages when gut colonization is paramount.
Benefits
The primary benefits of *B. infantis* include a notable reduction in the rates of NEC and LOS in preterm infants, achieving a relative risk reduction of 0.38 (95% CI: 0.27-0.55) compared to controls. Additionally, *B. infantis* has been linked to a decrease in diarrhea episodes among healthy term infants, although evidence varies in statistical significance (p = 0.047 at week 8). Emerging studies hint at possible neuroprotective effects, though further research is required to confirm these findings. These advantages are particularly crucial for vulnerable populations, where such probiotic interventions can significantly enhance overall health outcomes.
How it works
*B. infantis* primarily operates by utilizing human milk oligosaccharides, which helps it to influence intestinal microbiota composition essential for gut health. The probiotic plays a role in modulating immune functions and enhancing gut barrier integrity, which contributes to gastrointestinal well-being. While specific molecular interactions have yet to be clearly identified, it is believed that *B. infantis* is involved in several biological pathways that regulate immune responses and maintain microbial balance in the gut.
Side effects
*Bifidobacterium longum subsp. infantis* is generally recognized as safe, with no adverse effects reported in more than 5% of users. Some individuals may experience mild gastrointestinal symptoms such as bloating or discomfort (1-5%), while rare side effects (<1%) have not been documented. Despite the low likelihood of drug interactions, caution is recommended when administering this probiotic to immunocompromised individuals due to their increased risk of infections. Its robust safety profile indicates widespread tolerance within target populations, with special attention recommended for preterm infants and other vulnerable groups who require careful monitoring.
Dosage
The optimal dosage of *B. infantis* has not been decisively established; however, a minimum effective dose of approximately 10^7 CFU/g is suggested for use in infant formulas. Dosage variations exist among different studies, and no upper limit for maximum safe dosage in typical probiotic ranges has been defined. Early supplementation during infancy is recommended to gain potential health benefits, particularly regarding the reduction of NEC and LOS. Since *B. infantis* operates locally within the gut, it is commonly added to infant formulas or direct probiotic supplements. Specific co-factors for enhanced efficacy have not been identified.
FAQs
How should *B. infantis* be stored?
Ensure proper storage in a cool, dry place to maintain the viability of the probiotic.
Is *Bifidobacterium longum subsp. infantis* safe for all infants?
It is generally safe, but consult a healthcare provider for immunocompromised or other vulnerable infants.
When is the best time to administer this probiotic?
Early supplementation in infancy is optimal for promoting gut health.
What health benefits can I expect?
Expect reduced risks of NEC and LOS, as well as potentially fewer diarrhea episodes in infants.
Can it be relied upon for all gastrointestinal issues?
No, *B. infantis* is not a universal remedy; it specifically benefits certain conditions.
Research Sources
- https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6431810/ – A systematic review examining the effects of probiotic supplementation in preterm infants, highlighting the significant reduction in NEC and LOS associated with *B. infantis*. The review compiles various clinical studies, emphasizing the probiotic's role in improving intestinal health.
- https://pubmed.ncbi.nlm.nih.gov/30808846/ – This research article discusses the gastrointestinal benefits of early *B. infantis* supplementation in infants. It reports a decrease in diarrhea episodes and outlines the importance of early gut microbiome development in neonates.
- https://doi.org/10.1007/s00431-019-03475-6 – This study investigates the protective effects of *B. infantis* in preterm infants, demonstrating significant health outcomes and the importance of this probiotic in infant nutrition.
Supplements Containing Bifidobacterium Longum Infantis Nls
Recommended Articles

Top Ingredients for Optimal Gut Health
Fiber, probiotics, prebiotics, hydration, and fermented foods are crucial for maintaining healthy digestion and gut function.

Best Probiotic Strains & CFU for Health
Certain probiotic strains like Lactobacillus and Bifidobacterium, with CFU counts ranging from 1 billion for general wellness to 100 billion for conditions like IBS, are most beneficial.

Best Probiotic Strains for Your Health Goals
Certain probiotic strains offer targeted benefits for digestive health, immune support, weight management, and mental health.

Probiotics for IBS: Efficacy and Safety Insights
Probiotics significantly improve IBS symptoms and quality of life, with efficacy depending on the strain.
