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

The study looked at taking lots of vitamin C right when a cold starts and found it didn't help healthy adults feel better faster or less sick, just like the claim says.

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.

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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