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Strong Support
causal
Analysis v1
History

Taking very high doses of vitamin C right when you start feeling a cold won't make the cold shorter or less severe for healthy adults compared to taking normal amounts.

27
Pro
0
Against

Evidence from Studies

Supporting (1)

27

Community contributions welcome

27

Megadose vitamin C in treatment of the common cold: a randomised controlled trial

Randomized Controlled Trial
Human

Contradicting (0)

0

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.

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Source Study

Megadose vitamin C in treatment of the common cold: a randomised controlled trial

Score: 27
DOI: 10.5694/j.1326-5377.2002.tb04394.x

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