Nature Made Super D Immune Complex is an immune support supplement that is an excellent source of Vitamin D Selenium Zinc and Copper. Vitamin D3 is an essential nutrient that helps support a healthy immune response supports muscle teeth and bone health and helps improve Calcium absorption. Zinc Selenium and Copper are essential minerals that provide antioxidant support and also support immune health. Each tablet provides Vitamin D3 4000 IU (100 mcg) Selenium 10 mcg Zinc 11 mg and Copper 0.45 mg. Sourced from high-quality ingredients these Vitamin D Copper Selenium and Zinc supplements have no artificial flavors and are gluten free. Start your day with Nature Made Vitamin D supplements. (1) Based on a survey of pharmacists who recommend branded vitamins and supplements.