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 body's 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 body's 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.