Natures Plus Immune Zinc Lozenges 60. Nourish your natural immune defences with NaturesPlus Immune Zinc, delivering key nutrients to support overall immune system health.. Zinc and Copper contribute to the normal function of the immune system and to the protection of cells from oxidative stress.. IMMUNE HEALTH: Ionic zinc promotes healthy immune function. WITH COFACTORS: With the addition of copper (zinc’s mineral partner) to maintain the correct ratio of both zinc and copper. CHEWABLE: Delicious berry flavour