C-1000 Zinc Immune combines vitamin C with zinc for powerful immune system support.* This product utilizes TRAACS™ Zinc Bisglycinate, a form of zinc that has been shown in clinical studies to have superior bioavailability compared to other forms of supplemental zinc. C-1000 Zinc Immune combines vitamin C with zinc for powerful immune system support. This product utilizes TRAACS Zinc Bisglycinate, a form of zinc that has been shown in clinical studies to have superior bioavailability compared to other forms of supplemental zinc.C-1000 Zinc Immune combines vitamin C with zinc for powerful immune system support. This product utilizes TRAACS Zinc Bisglycinate, a form of zinc that has been shown in clinical studies to have superior bioavailability compared to other forms of supplemental zinc.Zinc, Hypromellose (cellulose capsule), Hydroxypropyl Cellulose, Stearic Acid (vegetable source) and Silicon Dioxide.