早至歐洲殖民美洲時,一些原住民就已經大量使用金印草,仍為醫藥或染料。班哲明·史密斯·巴頓(Benjamin Smith Barton)就指切羅基人以金印草來醫治癌症。他後來進一步指出金印草可以作為苦味補藥,或是洗滌眼炎之用。於1830年代康斯坦丁·薩繆爾·拉方斯克-舒馬茨(Constantine Raffinesque)的時期,金印草成為了折衷醫學的寵兒。
自1900年,John Uri Lloyd出版了《Stringtown on the Pike》後,美國就流傳金印草可以欺瞞興奮劑檢查。在一些賽馬的嗎啡檢測中也有嘗試使用金印草來掩飾,但卻不成功。[16]有兩項研究都證實口服金印草對尿液測試沒有影響。[15]喝大量清水及服用金印草的測試者尿液內的興奮劑水平相同。
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^Rabbani, G.H., Butler, T., Knight, J.; et al. Randomized controlled trial of berberine sulfate therapy for diarrhea due to enterotoxigenic Escherichia coli and Vibrio cholerae. J Infectious Dis. 1987, 155 (5): 979–984. 引文格式1维护:显式使用等标签 (link)
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^Lewis K. In search of natural substrates and inhibitors of MDR pumps. J Mol Microbiol Biotechnol. 2001, 3 (2): 247–54.
^Bergner, Paul. Goldenseal Substitutes. Medical Herbalism: A Journal for the Clinical Practitioner. 1996–1997, 8 (4) [2009-08-13]. (原始内容存档于1998-12-06).
^Tice Raymond. Goldenseal and Two of its constituent alkaloids: berberine and hydrastine. Seiger E (编). Review of Toxilogical Literature. Research Triangle Park, National Institute of Environmental Health Sciences. 1997.
^Foster Steven and Tyler Varro E. Tyler's Honest Herbal: A sensible guide to the use of herbs and related remedies. Binghamton, NY: The Haworth Herbal Press. 1999.