The Claim
Regular vitamin C prophylaxis reduces the duration of the common cold by 8% (95% CI 3% to 13%) in adults and 13.5% (95% CI 5% to 21%) in children, based on 30 comparisons involving 9,676 respiratory episodes.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
Taking vitamin C regularly might help you get over a cold a little faster—about 8% quicker for adults and 13% for kids, according to a big study.
See the scientific wording
Regular vitamin C prophylaxis reduces common cold duration by 8% (95% CI 3% to 13%) in adults and 13.5% (95% CI 5% to 21%) in children, based on 30 comparisons involving 9,676 respiratory episodes.
What the research says
1 studyStudy: Vitamin C for preventing and treating the common cold.
The study looked at whether taking vitamin C regularly prevents colds and found it shortens colds by about 8% in adults and 13.5% in kids, which matches the claim exactly.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.