The essential oil and extractum are extracted from its stem, leaf and flower by steam distillation and solvent extraction. According to the analysis, it contains 0.1003% essential oil and 0.74% extraction in average.

• 采其当年生茎、叶、花分别用水蒸馏法和萃取两种方法提取精油和浸膏；平均得率精油为0.；1003%25；浸膏为0