EZ Melts® contains zinc oxide because it has 80% elemental zinc (meaning the actual amount of zinc found in the supplement). Other forms of zinc (for example: zinc picolinate and other common types) contain only 20% elemental zinc.
We do not use zinc salts, such as zinc acetate since it would be extremely unpalatable (e.g., bitter, metallic) in an orally dissolving tablet. We use zinc oxide as it is also well known for its safety, stability, and large-scale studies supporting its benefit in other disease states (i.e., Age-related Macular Degeneration [AMD]) when taken orally in dietary supplements