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Clinical Trial
. 1981 Oct 17;2(8):411-2.
doi: 10.5694/j.1326-5377.1981.tb101032.x.

Vitamin C and the common cold: using identical twins as controls

A B Carr, R Einstein, L Y Lai, N G Martin, G A Starmer
Clinical Trial

Vitamin C and the common cold: using identical twins as controls

A B Carr et al. Med J Aust. .

Abstract

We analysed self-reported cold data for 95 pairs of identical twins who took part in a double-blind trial of vitamin C tablets. One member of each twin pair took vitamin C and the other took a well matched placebo each day for 100 days. Vitamin C had no significant effect except for shortening the average duration of cold episodes by 19%.

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