Best Supplements for Reduced Upper Respiratory Infections
Ranked by research evidence. Compare 18 supplements across 23 papers from the biomedical literature, with effect direction, evidence strength, and dose range for each.
Top picks by evidence
- Moderate evidence6 studies
Across 6 studies, 5 reported beneficial effects of Bifidobacterium animalis subsp. lactis BB-12 on reducing upper respiratory infections, with effect sizes ranging from small to large. Statistically significant findings were observed in 4 studies, including a meta-analysis (moderate effect, RR=0.79) and RCTs in infants (small effect) and young children (moderate effect). The most studied population is healthy infants and young children, with a specific dose of 10 billion CFU/day reported in one high-quality study.
Dose: 10 billion CFU/day
18 supplements
- ModerateBifidobacterium animalis subsp. lactis BB-12Across 6 studies, 5 reported beneficial effects of Bifidobacterium animalis subsp. lactis BB-12 on reducing upper respiratory infections, with effect sizes ranging from small to large. Statistically significant findings were observed in 4 studies, including a meta-analysis (moderate effect, RR=0.79) and RCTs in infants (small effect) and young children (moderate effect). The most studied population is healthy infants and young children, with a specific dose of 10 billion CFU/day reported in one high-quality study. · Dose: 10 billion CFU/day5 beneficial1 neutral6 studies