Echinacea purpurea for the Long-term Prevention of Viral Respiratory Tract Infections during COVID-19 Pandemic: A Randomized, Open, Controlled, Exploratory Clinical Study. medRxiv . doi:10.1101 ...

Natural health guide: echinacea. ... (Echinacea purpurea, Echinacea angustifolia and Echinacea pallida) ... and juices may be made by pressing the plant or extracting plant juice in alcohol.

The purple coneflower, Echinacea angustifolia, was the most widely used medicinal plant of the Plains Indians. It was used for a variety of ailments, including toothache, coughs, colds, sore throats, ...