Echinacea preparations tested in clinical trials differ greatly. There is some evidence that preparations based on the aerial parts of Echinacea purpurea might be effective for the early treatment of colds in adults but results are not fully consistent. Beneficial effects of other Echinacea preparations, and for preventative purposes might exist but have not been shown in independently replicated, rigorous randomized trials.

Echinacea

Health conditions analyzed in this study

Common Cold

1 supplement Moderately Positive Echinacea

Functions related to this study

Immunity

1 supplement Moderately Positive Echinacea

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Body systems related to this study

Respiratory System

1 supplement Echinacea