| http://www.w3.org/ns/prov#value | - Zinc lozenges (such as Ziacam) will shorten duration of sore throat and runny nose by ~ 30% if taken in first 24 hours of onset, and if directions for use closely followed???otherwise of limited value and not proven effective for control of cough.Alternative treatments - A number of alternative products, including vitamin C and herbal products such as Echinacea, are advertised to treat or prevent
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