Vitamin C and Colds
Vitamin C for preventing and treating the common cold.
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
No biological mechanisms were identified in this study. This may be an epidemiological, observational, or survey-based study that reports associations rather than proposing causal biological pathways.
Systematic Reviews & Meta-Analyses
Max 100Randomized Controlled Trials
Max 90Cohort Studies
Max 72Case-Control Studies
Max 58Cross-Sectional Studies
Max 44Case Reports & Case Series
Max 30Expert Opinion & Narrative Reviews
Max 533 / 100
Evidence Score
The highest quality evidence. These studies systematically search, appraise, and synthesize results from multiple individual studies, providing the most reliable summary of current knowledge.
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
No biological mechanisms were identified in this study. This may be an epidemiological, observational, or survey-based study that reports associations rather than proposing causal biological pathways.
Systematic Reviews & Meta-Analyses
Max 100Randomized Controlled Trials
Max 90Cohort Studies
Max 72Case-Control Studies
Max 58Cross-Sectional Studies
Max 44Case Reports & Case Series
Max 30Expert Opinion & Narrative Reviews
Max 533 / 100
Evidence Score
The highest quality evidence. These studies systematically search, appraise, and synthesize results from multiple individual studies, providing the most reliable summary of current knowledge.
Publication
Journal
The Cochrane database of systematic reviews
Year
2007
Authors
R. Douglas, H. Hemilä, E. Chalker, B. Treacy
Related Content
Claims (5)
This claim says that taking lots of vitamin C, echinacea, garlic, or vitamin D doesn't actually help you get better from a cold, according to real studies done on people.
Taking vitamin C pills every day doesn't really help prevent colds for most people, according to research.
Taking vitamin C pills cuts your chances of catching a cold in half if you're doing really tough activities like running marathons, skiing, or military training in freezing cold places.
Taking vitamin C regularly might help you get over a cold faster—about 8% quicker for adults and 14% for kids, according to a big study.
Taking vitamin C after you already have cold symptoms doesn't make your cold shorter or less severe compared to taking a fake pill.