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Bacteria

Bifidobacterium lactis

Bifidobacterium lactis is a bacterial species found in the gut and in fermented milk products. It is one of the most common bacteria in probiotic products.

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What did the trials report?

The 2018 trial found no difference in harms between groups; the 2025 study identified no safety concerns related to HN019. These findings concern the studied populations and durations. 1 2

Who needs greater caution?

Probiotics usually cause only minor effects such as gas, but serious infections have occurred mainly in severely ill or immunocompromised people. 3

For information, not individual medical advice. Ingredient studies do not establish the effectiveness of these products.

Sources

  3. Probiotics: Fact Sheet for Health Professionals NIH Office of Dietary Supplements