A method for stabilize reduced glutathione using micronized curcumin, to provide a solid and liquid composition or formulation comprising a dispersion of the micronized curcumin. Also, a method for improving the oxidative stability of a peptide in a composition by adding micronized curcumin with the composition, and dispersing the micronized curcumin into the composition containing the peptide. The composition can include a chewing gum.
