EpiCor is an innovative ingredient that is derived through a proprietary process from Saccharomyces cerevisiae a common single cell microorganism. EpiCor has been shown in scientific studies to support the bodys ability to initiate the proper immune response at the appropriate time thereby helping to maintain normal immune system balance.* NOW EpiCor Plus Immunity contains zinc selenium and vitamins D-3 and C to offer additional support for the bodys healthy immune response.* EpiCor is a registered trademark of Embria Health Sciences L.L.C.; TRAACS is a registered trademark of Albion Laboratories Inc. Natural color variation may occur in this product.