Pharmacokinetics study on costunolide and dehydrocostuslactone after administration of traditional Chinese medicine Weichang‘an pills Quantitative determination of eight active constituents in Tibetan medicine Zuozhudaxi by HPLC Simultaneous determination of six components in Bawei Chenxiang Powder by HPLC-DAD Advances in studies on active components of Saussurea lappa and their pharmacological actions Differences of metabolic profiling of Vladimiriae Radix before and after simmer processing by HPLC-UV technology Determination of costunolide and dehydrocostuslactone in Liuwei Muxiang Capsules by HPLC Studies on bioactive constituents in bark of Tsoongiodendron odorum Simultaneous determination of ten components in Xianglian Huazhi Pill by HPLC Chemical constituents from pericarps of Aquilaria sinensis and their biological activities Comparative study on absorption of effective components from roasting-processed and crude Vladimiriae Radix in stomach, small intestine, and colon of rats