Nourish your natural immune defences with NaturesPlus® Immune Boost. These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.delivering key nutrients to support overall immune system health, maintenance of mucous membranes.These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease. and protection from oxidative stress. NaturesPlus Immune Boost provides robust immune support with high-potency vitamins and minerals. These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease. along with N-Acetyl-Cysteine. These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.Vitamin A, C, D, zinc and selenium contribute to the normal function of immune system. †Selenium contributes to the protection of cells from oxidative stress. Vitamin A contributes to the maintenance of normal mucous membranes.