Echinacea root is one of the best-known herbal products in the world, and the Institute's monographs on Echinacea angustifolia and Echinacea purpurea grade the published evidence for colds as very low certainty. This film works out why. "Echinacea" on a label can mean two species and several plant parts, and many of the early positive trials tested pressed juice from the tops of the plant, which has different chemistry from the root.
This Short is the opening minute. Watch the full film: https://www.australian-pharmacognosy.org/videos/the-echinacea-audit-from-hplc-markers-to-clinical-reality/
If you want to use a herb, consult a degree-qualified herbalist with competencies and adequate training in pharmacognosy.
Prepared by the Department of Community Outreach, Australian Institute of Pharmacognosy, Cardwell, Queensland. Description: Jesse Kirby.