Search instead for berries mahonia aquifolium
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Felter's Materia Medica on Berberis (mahonia) Aquifolium
BERBERIS (Mahonia) AQUIFOLIUM
   The root of Berberis aquifolium, Pursh (Nat. Ord. Berberidaceae). Western United States from Colorado to the Pacific coast; cultivated also for ornament among shrubbery. Common Names: Oregon Grape, Mountain Grape. Principal Constituents.Berberine, the yellow alkaloid (see Hydrastis) and two white alkaloidsberbamine and oxyacanthine. Preparation.Specific Medicine Berberis. Dose, 1 to 30 drops. Specific Indications.Syphilitic dyscrasia; chronic skin diseases, with blood dyscrasia with or w...1
   The root of Berberis aquifolium, Pursh (Nat. Ord. Berberidaceae). Western United States from Colorado to the Pacific coast; cultivated also for ornament among shrubbery. Common Names: Oregon Grape, Mountain Grape. Principal Constituents.Berberine, the yellow alkaloid (see Hydrastis) and two white alkaloidsberbamine and oxyacanthine. Preparation.Specific Medicine Berberis. Dose, 1 to 30 drops. Specific Indications.Syphilitic dyscrasia; chronic skin diseases, with blood dyscrasia with or w...1
References
1) Felter, Harvey Wickes, 1922, The Eclectic Materia Medica, Pharmacology and Therapeutics, Cincinnati, Ohio.
