A multimineral supplement will prevent mineral imbalances that can result from taking high doses of zinc for extended periods of time. 24 Long-term users of NAC may consider adding supplements of zinc and copper. For the convenience of the reader, the information in the table listing the supplements for particular conditions is also categorized. Mossad SB, Macknin ML, Medendorp SV, et al. Zinc gluconate lozenges for treating the common cold.
Zinc lozenges reduce the duration of common cold symptoms.
The role of zinc lozenges in treatment of the common cold. Macknin ML, Piedmonte M, Calendine C, et al. Zinc gluconate lozenges for treating the common cold in children. A randomized controlled trial. The role of zinc lozenges in treatment of the common cold.