Isoflavones are the main active components in kudzu root.Most of them exist in the form of isoflavone glycosides.The free aglycons are more active than their glycoside.

• 葛根中的主要活性成分是异黄酮，大部分异黄酮是以糖苷的形式存在，而相应游离甙元的活性要比糖苷高得多。