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Myth #3: Vitamin C can prevent a cold Pharmacy and grocery store shelves are packed with vitamin C supplements that heavily imply or even clearly state that they’ll help prevent a cold. But the ...
Another meta-analysis calculated that, in children, 1–2 g/day vitamin C shortened the duration of colds by 18%, and in adults 1–4 g/day vitamin C shortened the duration of colds by 8%. [46] There is evidence of higher doses being more effective on common cold duration up to 6–8 g/day. [ 47 ]
Vitamin C and the Common Cold is a popular book by Linus Pauling, first published in 1970, on vitamin C, its interactions with common cold and the role of vitamin C megadosage in human health. [1] The book promoted the idea that taking large amounts of vitamin C could reduce the duration and severity of the common cold. A Nobel Prize-winning ...
The Nobel Prize winner Linus Pauling advocated taking vitamin C for the common cold in a 1970 book. Research on vitamin C in the common cold has been divided into effects on prevention, duration, and severity. Oral intakes of more than 200 mg/day taken on a regular basis was not effective in prevention of the common cold.
Second, the adult tablet contains 1 g of vitamin C, and the directions for use advise taking 1 tablet at the first sign of a cold and repeating the dose every 3 hours as necessary, but no more than three servings a day. Vitamin C in doses higher than 1 g increases oxalate and urate excretion and may cause kidney stones. [11]
A 2007 review states that, "alternative therapies (i.e., Echinacea, vitamin C, and zinc) are not recommended for treating common cold symptoms; however,...Vitamin C prophylaxis may modestly reduce the duration and severity of the common cold in the general population and may reduce the incidence of the illness in persons exposed to physical and ...