Henry Blooms Immune Forte + contains Elderberry, Astragalus and Rehmannia together with immune system supporting nutrients Vitamin C and Zinc. Blooms Immune Forte + helps support the health and function of the immune system. Elderberry contains the flavonoids Quercetin and Rutin, Anthocyanins and Vitamins A and C. Elderberry has antioxidant properties and help support healthy immune function. Astragalus is traditionally used in Western Herbal Medicine for healthy immune system support. Zinc and Vitamin C both help support healthy immune function. Zinc is also important for the maintenance of a healthy immune system and support skin repair and wound healing