Why must only highly standardized extracts of botanical products be used as ingredients in supplements?

In the majority of botanicals (like Guarana and Ginkgo), the incidence of the active compounds is uneven not only from plant to plant, but as well in dissimilar regions within the same plant. Therefore it is essential to employ strict standardization methods throughout extraction and processing of the needed elements. These standardization procedures promise that the resulting extract has constant levels of the active components for which the botanical has worth as a nutritional supplement.

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