Objective:To study the iridoid glycoside constituents of Pedicularis verticillata and their anti-complement activities.Methods:The anti-complement activities were tested in different parts of Pedicularis verticillata with the method of anti-complement activity oriented separation by hemolytic test.The compounds were isolated and purified by repeated silica gel,reversed-phase column chromatography and Sephadex LH-20.The structures of these compounds were elucidated by physico-chemical properties and spectral...