title: Chronic use of echinacea should be discouraged.
authors.forename: Doson
authors.initials: D
authors.lastname: Chua
mesh_terms: D003139:Common Cold / Q000517:prevention & control*; D020900:Echinacea; D006801:Humans; D008517:Phytotherapy; D028321:Plant Preparations / Q000009:adverse effects / Q000627:therapeutic use*; D013997:Time Factors
chemical_list: D028321:Plant Preparations