ZINC LOZENGES Optimum Nutrition's Zinc lozenges contain 23 mg of elemental zinc derived from zinc-free form amino acid complex and zinc gluconate. Each lozenge is sweetened with pure crystalline fructose, pure liquid honey and has a 100% natural and delicious flavor. Zinc lozenges may be the natural alternative to the cure for the common cold. Although not an absolute cure, zinc gluconate lozenges may significantly reduce the duration of the common cold. According to a recent study, zinc lozenges helped shorten the resolution of cold symptoms by three to four days.