Simultaneous determination of scopolamine hydrobromide, atropine sulfate, ephedrine hydrochloride and pseudoephedrine hydrochloride in Zhichuanling oral liquid with HPLC Comparison of effects of ephedrine,pseudoephedrine,and their salicylate derivative on central nervous system in mice Conversion of (+)-pseudoephedrine to (-)-ephedrine Effect of Cinnamomi Ramulus on distribution kinetics of ephedrine and pseudoephedrine from Ephedrae Herba in brain tissues of mice Determination of ephedrine and pseudoephedrine in MAHUANG TANG by GC-MS and effect of compatible medicinal herbs on concentration of components in decoction Influence of different compatibility for Improved Peach Gum to balance release of complex components Optimal separation and purification of extract in Sanao Sustained-release Tablets with macroporous resins by multi index comprehensive score Determination of ephedrine and pseudoephedrine in Herba Ephedrae and Maxing Shigan Tang by capillary zone electrophoresis Absorption and transportation characteristic of alkaloids from Herba Ephedrae in model of Caco-2 cells monolayer Improvement of the process of producing pseudoephedrine hydrochloride Determination of impurity in ephedrine hydrochloride and pseudoephedrine hydrochloride by HPLC Pharmacokinetics of ephedrine and pseudoephedrine from Herba Ephedrae Decoction and Herba Ephedrae in mice tissues