Zinpro is a patented organic source of zinc for animals. Zinpro is made by linking the amino acid methionine with zinc to form a structure (zinc methionine) that can be absorbed directly into the bloodstream. Zinc serves two broad functions: - Enzyme Function (necessary for a strong immune system and good digestion) and - Protein Synthesis (cell reproduction in skin, coat, footpads, nails which are mostly protein - 85%).