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Echinacea is a genus, or group of herbaceous flowering plants in the daisy family. The Echinacea genus has nine species, which are commonly called purple coneflowers. They are found only in eastern and central North America, where they are found growing in moist to dry prairies and open wooded areas. They have large, showy heads of composite flowers, blooming from early to late summer. Echinacea purpurea is used in folk medicine. Although there are multiple scientific reviews and meta-analyses published on the supposed immunological effects of echinacea, significant variability of echinacea products used among studies limited conclusions about effects and safety, consequently leading to non-approval of any health benefit or anti-disease activity. (source)
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