Vitamin D Does Not Prevent – Or Reduce Severity Of – The Common Cold

October 2, 2012: 12:00 AM EST

A randomized clinical study of vitamin D’s effectiveness in fighting the common cold found no significant benefit. The New Zealand study included 322 healthy adults who received an initial dose of 200,000 IU of oral vitamin D3, then 200,000 IU a month later, and 100,000 IU monthly for a total of 18 months. The researchers found that the monthly dose of vitamin D3 in healthy adults did not significantly prevent upper respiratory tract infections or reduce their severity, even during winter. They suggested that further research is needed among other populations and with different doses of vitamin D.

David R. Murdoch et al. , "Effect of Vitamin D3 Supplementation on Upper Respiratory Tract Infections in Healthy Adults", The Journal of the American Medical Association, October 02, 2012, © American Medical Association

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Vitamin D Does Not Prevent – Or Reduce Severity Of – The Common Cold

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