Bifidobacterium
Bifidobacterium species are widely studied probiotics with FDA GRAS notices for several strains; they are generally safe in healthy individuals and may benefit GI and immune health. Rare adverse events (bacteremia) reported in severely immunocompromised or critically ill patients.
What it is
Genus of beneficial gram-positive anaerobic bacteria native to the human gut, used as probiotics.
Probiotic culture added to fermented dairy and supplements; supports gut microbiome.
Why it's flagged
- rare bacteremia in immunocompromised patients
- variable strain-specific evidence
What regulators actually say
"Bifidobacterium species are among the most commonly used probiotics; clinical studies support benefits in gastrointestinal disorders and immune modulation, with rare adverse effects in healthy populations."
Regulatory status
United States — FDA
Multiple strains have GRAS notices for use in foods (e.g., GRN 49, 268).
European Union — EFSA
Recognized in EU as Qualified Presumption of Safety (QPS) for several species.
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