Echinacea is the name of a genus of native North American plants, commonly known as the purple coneflower. The most widely used herbal product in the United States is a liquid extract made from the root of Echinacea purpurea. Because the active component of the plant has not been identified,
BACKGROUND
Echinacea has antiviral activity against influenza viruses in vitro and has traditionally been used for treatment of colds and flu.
OBJECTIVE
This randomized, double-blind, double-dummy, multicenter, controlled clinical trial compared a new echinacea formulation with the neuraminidase
Echinacea purpurea (Asteraceae) is a perennial medicinal herb with important immunostimulatory and anti-inflammatory properties, especially the alleviation of cold symptoms. The plant also attracted scientists' attention to assess other aspects of its beneficial effects. For instance, antianxiety,