Probiotics

Tier 2 — promising · Gut · Immunity · RTI

Probiotic benefits are strain-specific — no single product works for everything. A 2025 meta-analysis found B. animalis reduced respiratory infections by 21%. L. rhamnosus GG is best supported for antibiotic-associated diarrhea and IBS-D. Lactobacillus reuteri has evidence for infant colic. The key is matching the right strain to your specific need.

Dose: RTI prevention: B. animalis ≥1B CFU/day; IBS-D: L. rhamnosus GG 10B CFU/day; take 2 hrs from antibiotics