Supports a quick, vigorous response to immune system distress.* Rapid Immune Boost includes Echinacea extracted from the Certified Organic root of Echinacea purpurea plants grown on our own farms in southern Oregon. It also includes Goldenseal made from Certified Organic Hydrastis canadensis rhizome and rootlet. We only use cultivated Goldenseal in order to preserve wild-growing populations of this threatened plant.