Content: 20 alkaloids: isotetrandrine 90%, cycleanine, nor-2-isotetrandrine, N-oxy-isotetrandrine, liriodenine, 8-oxy-palmatine, thalrugoside, thalrugosamine, berbamine; bisbenzylisoquinolines, aporphines, protoberberines; lacking flavonoids, saponines, tannins, quinones.