The study evaluated the anticomplement effects from organic solvent extracts of five Compositae plants (Ligularia fischeri (Ledeb.) Turez, Ligularia taquetii (H.Lev. & Vaniot) Nakai, Ainsliaea acerifolia Sch.Bip, Aster scaber Thunb, Aster koraiensis Nakai, Synurus deltoides Aiton) from South Korea