脱氧麻黄碱，是1893年首次合成的兴奋剂，二战期间被德国士兵广泛使用。

Methamphetamine, a psychostimulant that was first synthesized in 1893, was widely used by German soldiers during WWII.

结果：索氏提取法提取和水提取麻黄碱含量较高，适合工业化生产要求。

Result:Higher ephedrine content was extract by using Suoshi extraction method and the acid water extraction method, which conforms to the industrialization production requirements.

方法：采用麻黄碱贴膏，比较在体透皮给药对豚鼠整体平喘作用的影响。

METHODS:The gelatinizer made from ephedrine was taken as the treatment to carry research for antiasthmatic effect and compared the difference between therapeatic and control drug.

方法采用4因素3水平正交设计法，以麻黄碱为指标，用高效液相色谱法优选提取工艺。

Method With ephedrine as an experimental criterion, the orthogonal design (4 factors and 3 levels) and HPLC were used to optimize the technology of ephedrine extraction from the ephedra stems.