Nutritional support for your immune systemImmunace has been developed by vitabiotics experts to give you advanced nutritional support for all-round health and vitality, as well as specific nutrients to help support normal function of the immune system, including 1000iu vitamin D3.- Vitamin D, Zinc Selenium contribute to the normal function of the immune system. Provides D3, the preferred form of vitamin D, produced in the body on exposure to sunlight. Plus folate which contributes to normal blood formation.- Vitamins C E contribute to the protection of cells from oxidative stress. Immunace provides a daily source of vitamin C which is not produced or stored by the body.- Vitamin A contributes to the maintenance of normal skin and mucous membranes.