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.
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Evidence from Studies
Supporting (1)
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Community contributions welcome
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Vitamin C for preventing and treating the common cold.
Systematic Review With Meta-Analysis
2007 Jul 18Contradicting (0)
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Community contributions welcome
No contradicting evidence found
Gold Standard Evidence Needed
According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.