72
SCORE
Bifidobacterium longum BB536
Gut health · Immunity · Allergy
Tier 2 — Promising
What it is
One of the most researched Bifidobacterium strains with over 200 published studies. Multiple trials confirm BB536 improves seasonal allergy symptoms, reduces respiratory infections in elderly care facilities, and normalises bowel habits. A 2024 trial found 10 billion CFU/day significantly reduced cedar pollen allergy scores. Also supports bone mineral density in postmenopausal women.
Efficacy
3/5
Safety
5/5
Research
3/5
Onset
3/5
Cost
3/5
Drug-int.
5/5
Dose
2–10 billion CFU/day; well studied for allergies, immunity, and bowel regularity
Time of day & tips
Refrigerate after opening. Take with or without food. Allow 4–8 weeks for allergy benefits. Can be combined with other probiotic strains. Very safe across all age groups.
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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