The methanolic extract was analyzed by using pre-coated silica gel G plates of 250 mm layer, UV 254 (Merck) by co-chromatography with authentic sample of Nitidine (Aktin Chemicals, Inc (China) Chengdu, P.R.China). The plates were developed in a solvent system of chloroform: methanol (7:1) and detected using Dragendorff’s reagent.