Berberine vs. Metformin

Berberine, plant alkaloid found in Hydrastis canadensis (goldenseal), Coptis chinensis (Coptis or goldenthread), Berberis aquifolium (Oregon grape), Berberis vulgaris (barberry), and Berberis aristata (tree turmeric) has been shown to lower elevated blood glucose as effectively as metformin.

Source: Metabolism. May 2008;57(5):712-717

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