Arranged by Pharmacological Activity

Although it may not always be possible to control the sources or extraction conditions to produce only a single component, they should be arranged so as to produce, as far as possible, a consistent mixture. Impurity profiles of botanical products are often monitored by a number of anal3hical procedures to ensure product quality. Minor components that have pharmacological activity should not necessarily be viewed as impurities. In some cases, the activity of a botanical or fermentation drug substance may be attributed to a number of components. 

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