An orally disintegrating composition comprising a chelate comprising a metal ion and a biologically acceptable amino acid and having the general formulawherein M is the metal ion Zn2+ and R is H in the biologically acceptable amino acid glycine, use of the composition for the treatment of halitosis, and a chewing gum for the treatment of halitosis comprising a chelate comprising a metal ion and a biologically acceptable amino acid and having said general formula, which chewing gum is based on a carrier composition comprising a gum base, sorbitol, xylitol, one or more plasticizer(s), and one or more anticaking agent(s).
