NaturesPlus® Immune Boost delivers key nutrients to support overall immune system health, maintenance of mucous membranes and support against oxidative stress. It provides robust immune support with high-potency vitamins and minerals along with N-acetyl-cysteine.DirectionsAs a food supplement for adults, take one tablet daily.IngredientsAscorbic acid, bulking agent (microcrystalline cellulose), N-acetyl-cysteine, zinc gluconate, rice protein, gelling agent (vegetable cellulose [E468]), anti-caking agent (stearic acid), cholecalciferol (from algae), selenomethionine, anti-caking agent (silica), beta carotene and glazing agent (E904)Allergen InformationVegetarian,Hypoallergenic,AdditivesSweeteners and AdditivesMicrocrystalline cellulose, stearic acid, rice protein, silica, ascorbic acid and glazing agent (E904)