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Not curing the common cold

BMJ 2012; 345 doi: https://doi.org/10.1136/bmj.e6610 (Published 03 October 2012) Cite this as: BMJ 2012;345:e6610

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A large dose of oral vitamin D every month did not prevent a single upper respiratory tract infection in the latest trial to test supplements against a placebo. Healthy adults from Christchurch in New Zealand took 100 000 IU a month for …

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