Clinically Proven Epicor Supports a Healthy Immune Response. Supports Respiratory Wellness. 3-In-1 Blend Advanced Immune Support. EpiCor | Vitamin D3 | Vitamin C. No Color Added. No Artificial Flavors. No Artificial Sweeteners. Gluten Free. 100% Drug Free. Advanced Immune Support. A Triple Action Immune Blend designed to support respiratory tract wellness, a healthy immune response, and nasal health. + EpiCor. Clinically proven postbiotic helps support respiratory wellness. + Vitamin C. Helps support the immune system and neutralize free radicals in the body. + Vitamin D3. Helps support a healthy immune system. Blended with Purpose. Nature Made Wellblends are crafted using a blend of ingredients that are scientifically designed to support your body’s health.