And take your zinc lozenge. Researchers from the University of Helsinki and the University of Sydney reviewed the data on zinc and the common cold and recently reported it in BCM Family Practice. After reviewing the studies on the use of zinc and its effect on cold symptoms, they concluded that low dose zinc lozenges did not have a significant effect on reducing the duration of cold symptoms but high dose lozenges did. Lozenges with 80 mg of zinc reduced the duration of runny noses, nasal congestion, sore throat, scratchy throat, hoarseness, cough, and muscle aches. Headache and fever were unaffected. The researches recommended that the lozenges be started within 24 hours of symptoms and should be taken for less than two weeks.