... , we ahead of others find Echinacea, commonly named purple-coneflower, which is one of the most potent immunostimulants ... and treatment on poultry and swine. Main ingredients of Purple-chryEchinacea extract, Astragalus membranaceus extract, with active ingredients ... Phenolics, essential oil and bioflavonoids. Main function of Purple-chry-Promote the development of immune system, improve the ...