A Physician-Formulated, All Natural, Evidence-based Supplement designed to boost and optimize immune function. Take at the first signs or symptoms of a cold, when traveling or when your family, coworkers or kids are sick to prevent catching a cold and to boost your immunity for faster recovery time. Features include: A high potency B complex, 35mg of Zinc per serving, an Herbal and Antioxidant complex with Green tea extract, Amla Berry, Echinacea, Golden Seal Root, Garlic and Ginger. Trusted by doctors, nurses and many more.