Echinacea Purpurea Powder- With a reputation in herbal circles as, perhaps, nature’s own best immune system enhancer, Echinacea Purpurea may also be one of nature’s most powerful natural antibiotic supports. ¬†Considered the most potent of the Echinacea genus, Echinacea purpurea helps to support the body’s efforts to stimulate resistance to infection, diseases, fever and blood poisoning. When you feel the flu or common cold coming on, reach for Echineacea, one of the finest “must-have” herbs, to support relief.