DEFINITION

Powdered Goldenseal Extract is prepared from the pulverized dried roots and rhizomes of Hydrastis canadensis L. (Fam. Ranunculaceae), using suitable solvents. It contains NLT 5% of hydrastine (C₂₁H₂₁NO₆) and NLT 10% of the sum of berberine (C₂₀H₁₈NO₄) and hydrastine, calculated on the dried basis. The ratio of starting crude plant material to Powdered Goldenseal Extract is 2:1.