AJCN Tufts Nutrition Symposium, Boston Sept 24-26
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American Journal of Clinical Nutrition, Vol 28, 973-976, Copyright © 1975 by The American Society for Clinical Nutrition, Inc

ORIGINAL RESEARCH COMMUNICATIONS

L-Ascorbic acid and D-isoascorbic acid in a common cold survey

KM Clegg and JM Macdonald

In a survey of double-bind design, 3 groups of approximately 70 student volunteers took 1 g L-ascorbic acid, 1 g D-isoascorbic acid, or placebo tablets every day for 15 weeks and the incidence and duration of colds were recorded. The group taking D-isoascrobic acid suffered 34% fewer colds than the other two groups; the results were also analyzed in relation to the sex and smoking habits of the volunteers. The rationale for investigating D-isoascorbic acid, an isomer of L-ascorbic acid which has limited antiscorbutic activity, is discussed.




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Copyright © 1975 by The American Society for Nutrition