Zinc is an essential mineral that plays a major role in growth, reproduction, antioxidant defenses and healthy immune function. Zinc is a critical nutrient for the immune system. The normal, healthy development of immune cells, particularly T-lymphocytes depends upon adequate zinc status. Zinc deficiency has been shown to reduce the physical size of the thymus gland; it is here where T cells mature to become fully functional mature T-lymphocytes. These cells are critical for a healthy immune response. Provided as a lozenge, zinc gluconate has been shown to reduce the severity and duration of the common cold, as well as reduce antibiotic use in school-age children with a cold.* Features: Provides 15 mg of zinc citrate and gluconate per lozenge. Contains slippery elm and propolis to soothe the throat. Pleasant taste from natural lemon flavor and sorbitol. Benefits: Helps support normal, healthy immune function.* Provides antioxidant support which is essential to immune function.* Studies show a reduction in the severity and duration of the common cold.* Studies also show that prophylactic (preventive) use may reduce the # of colds per year, as well as reduce antibiotic usage.* Slippery elm is a mucilaginous herb that provides soothing support for the mucus lining of the throat and esophagus, both of which may become irritated during a cold/infection.* Warning: Do not exceed 4 lozenges per day or take high amounts (4 or more) for more than 10-14 days as excess zinc may cause a copper deficiency. Taking a multivitamin with copper or a copper supplement containing at least 1-2 mg/day can help reduce this risk