Bifidobacterium is the DOMINANT genus in infant gut (>90%) and declines with age. B. longum BB536, B. lactis HN019, B. infantis 35624 (Align®) are the most-studied strains. B. infantis 35624 is the ONLY probiotic FDA-approved for IBS (under Align brand). Bifidobacterium is specifically increased by: inulin, FOS, GOS, human milk oligosaccharides (HMOs), and larch arabinogalactan. --- *Reviewed by the Dose AI Research Team and Clinical Advisory Board* *Last updated: 2026-04-06*
Based on independent third-party laboratory analysis
Category pass rate: ~85% of probiotic supplements passed. Major failures are in kefir/fermented products and counting method controversies.
Reviewed by the Scan Dose Research Team and Clinical Advisory Board | Last updated:
Not medical advice. Based on published clinical research and systematic reviews.