Planta medica
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Echinacea preparations are widely used for common cold. Many consumers and healthcare professionals are not aware that products available under the term Echinacea may differ in their composition, due to the use of different species, plant parts, extraction methods and addition of other components. ⋯ In the meantime two further meta-analyses have been published. In the present mini-review, these latest meta-analyses are evaluated and discussed.