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植物名 Ephedra sinica,E.intermedia,E.equi-setina,E.distachya.E.gerardiana,E.shennun-giana,Ephedra species。活性成分与药理作用药用部位主要为干燥的嫩枝。通常较少用其根或全植物。存在于饮食补充剂中的麻黄一般为粉末状茎和地上部分的制剂或是一干浸膏。由于提取工艺的原因,其干浸膏中每单位重量的药材内含有较多的麻黄生物碱。主要的生物碱成分为麻黄碱和伪麻黄碱。如果作为粉末状提取物摄人,麻黄碱被较快地吸收。但是,在粉末状提取物或
Botanical name Ephedra sinica, E.intermedia, E. equi-setina, E. distachya. E. gerardiana, E. shennun-giana, Ephedra species. Active ingredients and pharmacological effects Medicinal parts are mainly dry shoots. Less often its root or whole plant is used. Ephedra present in dietary supplements is generally a formulation of powdered stems and aerial parts or a dry extract. Due to the extraction process, there is more ephedra alkaloid per unit weight of medicinal material in the dry extract. The main alkaloids are ephedrine and pseudoephedrine. If taken as a powdered extract, ephedrine is absorbed faster. However, in powdered extract or