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Bifidobacterium lactis (BB-12 / HN019)

Immunity · Gut regularity · Infant health

Tier 2 — Promising

What it is

One of the most documented probiotic strains with over 300 scientific publications. The BB-12 strain significantly reduces respiratory infections in children and improves gut regularity in adults. The HN019 strain specifically helps with constipation and improves immune cell activity in older adults. Very safe across all age groups including infants. Widely used in infant formula and dairy products worldwide.

Efficacy

3/5

Safety

5/5

Research

3/5

Onset

3/5

Cost

3/5

Drug-int.

5/5

Dose

1–10 billion CFU/day; BB-12 for immunity, HN019 for regularity

Time of day & tips

Take with or just after a meal. If also taking antibiotics, space them at least 2 hours apart. Refrigerate if required. Consistent daily use matters more than timing.

Sensitive populations: This supplement's evidence base touches pregnancy, pediatric, or other sensitive populations. Confirm any change with your healthcare provider before use.

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