Quick Answer
Use iHerb discount code KHQ339 at checkout.
Supports Immune System Herbal Supplement Formulated by Michael Tierra L.Ac O.M.D Echinacea and goldenseal are the two most relied-upon botanicals for winter health. Echinacea reigns supreme as North America's primary immune-enhancing botanical. This combination is further enhanced by the addition of European olive leaf plus other key Western and Chinese botanicals such as garlic isatis and andrographis.