Does echinacea work?

Overall Effectiveness Rating for Echinacea

The overall effectiveness rating for echinacea is 1.3 out of 3. This rating means there is little to no evidence echinacea does what it claims. Using this supplement will not lead to positive results.

Overall Confidence Rating for Echinacea

There are 4 studies in the database on echinacea; the confidence rating is 47. A score above 80 means the effectiveness rating for this supplement is reliable. A score under 80 means there is insufficient evidence to ensure a reliable effectiveness rating. Note, this rating is for echinacea as a whole. There are also individual ratings for the claims below.

Individual Claims

The overall ratings above do no necessarily reflect each claim about echinacea. Individual claims can have higher or lower ratings. For example, some supplements may have a lot of backing for one claim, but be completely useless for another. Click on claims below for more information.

Immune Health Claims Effectiveness Rating Confidence Rating
reduce frequency of the common cold
reduce duration of the common cold
reduce severity of the common cold