Studies on pharmacokinetics of nitidine chloride in rabbits STUDY ON ALKALOIDS OF ZANTHOXYLUM LAETUM Determination of Nitidine Chloride in Shinyleaf Pricklyash(Zanthoxylum nitidum) ALKALOIDS FROM THE ROOT OF ZANTHOXYLUM NITIDUM VAR. FASTUOSUM Determination of Three Alkaloids of Zanthoxylum nitidum var.fastuosum Using TLCS