Echinacea for the common cold.
Mittman
Paul
P
Wollner
Debra
D
Kim
Linda
L
D003139:Common Cold / Q000188:drug therapy*; D020900:Echinacea; D006801:Humans; D008517:Phytotherapy; D010919:Placebos / Q000592:standards*; D028321:Plant Preparations / Q000627:therapeutic use*; D016032:Randomized Controlled Trials as Topic / Q000592:standards*
D010919:Placebos; D028321:Plant Preparations