Zinc Acetate Lozenges for the Treatment of the Common Cold: A Randomized Controlled Trial
Harri Hemilä, Jari Haukka, Marianne Alho, Jussi Vahtera, and Mika Kivimäki
When used for 5 days after the onset of symptoms, a commercially available zinc acetate lozenge was ineffective in treating the common cold. While taste has been a frequent complaint in previous zinc lozenge studies, a third of zinc participants reported no negative side effects. Before zinc lozenges may be commonly marketed for common cold care, further research is required to determine the characteristics of zinc lozenges that could be clinically effective.