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1 However, taking vitamin C before the onset of cold symptoms may shorten the duration of symptoms. 2  Vitamin C may provide benefit for people at high risk of colds due to frequent exposure â for example, children who attend group child care during the winter.
Although there is little proof that cold will help, some people do find that heat or cold help them: apply heat, such as hot packs, baths and showers for 15-20 minutes at a time. Ice and cold packs can relieve pain, swelling, and inflammation from injuries and other conditions such as arthritis.