Williamson EM, Evans FJ, eds. Potter's New Cyclopaedia of Botanical Drugs and Preparations. Essex, England: CW Daniel Company Ltd., 1998.

Rehman J, Dillow JM, Carter SM, et al. Increased production of antigen-specific immunoglobulins G and M following in vivo treatment with the medicinal plants Echinacea angustifolia and Hydrastis canadensis. Immunol Lett 1999;68:391-5. View abstract.

Kaneda Y, Torii M, Tanaka T, Aikawa M. In vitro effects of berberine sulphate on the growth and structure of Entamoeba histolytica, Giardia lamblia and Trichomonas vaginalis. Ann Trop Med Parasitol 1991;85:417-25. View abstract.

Gupte S. Use of berberine in treatment of giardiasis. Am J Dis Child 1975;129:866. View abstract.

Chan E. Displacement of bilirubin from albumin by berberine. Biol Neonate 1993;63:201-8. View abstract.

Lust J. The herb book. New York, NY: Bantam Books, 1999.

Amin AH, Subbaiah TV, Abbasi KM. Berberine sulfate: antimicrobial activity, bioassay, and mode of action. Can J Microbiol 1969;15:1067-76. View abstract.

Sun D, Courtney HS, Beachey EH. Berberine sulfate blocks adherence of Streptococcus pyogenes to epithelial cells, fibronectin, and hexadecane. Antimicrob Agents Chemother 1988;32:1370-4. View abstract.

Scazzocchio F, Corneta MF, Tomassini L, Palmery M. Antibacterial activity of Hydrastis canadensis extract and its major isolated alkaloids. Planta Med 2001;67:561-4. View abstract.

Janbaz KH, Gilani AH. Studies on preventive and curative effects of berberine on chemical-induced hepatotoxicity in rodents. Fitoterapia 2000;71:25-33.. View abstract.

Zeng XH, Zeng XJ, Li YY. Efficacy and safety of berberine for congestive heart failure secondary to ischemic or idiopathic dilated cardiomyopathy. Am J Cardiol 2003;92:173-6. View abstract.

Anis KV, Rajeshkumar NV, Kuttan R. Inhibition of chemical carcinogenesis by berberine in rats and mice. J Pharm Pharmacol 2001;53:763-8. . View abstract.

Hsiang CY, Wu SL, Cheng SE, Ho TY. Acetaldehyde-induced interleukin-1beta and tumor necrosis factor-alpha production is inhibited by berberine through nuclear factor-kappaB signaling pathway in HepG2 cells. J Biomed Sci 2005;12:791-801. View abstract.

Khosla PG, Neeraj VI, Gupta SK, et al. Berberine, a potential drug for trachoma. Rev Int Trach Pathol Ocul Trop Subtrop Sante Publique 1992;69:147-65. View abstract.

Wu X, Li Q, Xin H, Yu A, Zhong M. Effects of berberine on the blood concentration of cyclosporin A in renal transplanted recipients: clinical and pharmacokinetic study. Eur J Clin Pharmacol 2005;61:567-72. View abstract.

Tsai PL, Tsai TH. Hepatobiliary excretion of berberine. Drug Metab Dispos 2004;32:405-12. . View abstract.

Ang ES, Lee ST, Gan CS, et al. Evaluating the role of alternative therapy in burn wound management: randomized trial comparing moist exposed burn ointment with conventional methods in the management of patients with second-degree burns. MedGenMed 2001;3:3. View abstract.

Li B, Shang JC, Zhou QX. [Study of total alkaloids from rhizoma coptis chinensis on experimental gastric ulcers]. Chin J Integr Med 2005;11:217-21. View abstract.

Kim SH, Shin DS, Oh MN, et al. Inhibition of the bacterial surface protein anchoring transpeptidase sortase by isoquinoline alkaloids. Biosci Biotechnol Biochem 2004;68:421-4.. View abstract.

Yu LZ, Wu JY, Luo JB, et al. [Effects of different compositions of Gegenqinlian decoction on experimental shigellosis in rabbits]. Di Yi Jun Yi Da Xue Xue Bao 2005;25:1132-4. View abstract.

Wang S, Zheng Z, Weng Y, et al. Angiogenesis and anti-angiogenesis activity of Chinese medicinal herbal extracts. Life Sci 2004;74:2467-78. View abstract.

Lin CC, Ng LT, Hsu FF, et al. Cytotoxic effects of Coptis chinensis and Epimedium sagittatum extracts and their major constituents (berberine, coptisine and icariin) on hepatoma and leukaemia cell growth. Clin Exp Pharmacol Physiol 2004;31:65-9. View abstract.

Wang GP, Tang FQ, Zhou JP. [Effect of Coptis Chinensis compound on the gene expression in transplanted tumor tissue in nasopharyngeal carcinoma cell line of CNE1 by cDNA microarray]. Hunan Yi Ke Da Xue Xue Bao. 2003;28:347-52. View abstract.

Yokozawa T, Satoh A, Cho EJ, et al. Protective role of Coptidis Rhizoma alkaloids against peroxynitrite-induced damage to renal tubular epithelial cells. J Pharm Pharmacol 2005;57:367-74. View abstract.

Schinella GR, Tournier HA, Prieto JM, et al. Antioxidant activity of anti-inflammatory plant extracts. Life Sci 2002;70:1023-33. View abstract.

Kong LD, Cheng CH, Tan RX. Monoamine oxidase inhibitors from rhizoma of Coptis chinensis. Planta Med 2001;67:74-6. View abstract.

Hsieh MT, Peng WH, Wu CR, Wang WH. The ameliorating effects of the cognitive-enhancing Chinese herbs on scopolamine-induced amnesia in rats. Phytother Res 2000;14:375-7. View abstract.

Lin LT, Liu LT, Chiang LC, Lin CC. In vitro anti-hepatoma activity of fifteen natural medicines from Canada. Phytother Res 2002;16:440-4. View abstract.

Cuellar MJ, Giner RM, Recio MC, et al. Topical anti-inflammatory activity of some Asian medicinal plants used in dermatological disorders. Fitoterapia 2001;72:221-9. View abstract.

Yang LQ, Singh M, Yap EH, et al. In vitro response of Blastocystis hominis against traditional Chinese medicine. J Ethnopharmacol 1996;55:35-42. View abstract.

Schinella GR, Tournier HA, Prieto JM, et al. Inhibition of Trypanosoma cruzi growth by medical plant extracts. Fitoterapia 2002;73:569-75. View abstract.

Chen H, Deng C, Nie H, Fan G, He Y. Transcriptome analyses provide insights into the difference of alkaloids biosynthesis in the Chinese goldthread (Coptis chinensis Franch.) from different biotopes. PeerJ. 2017;5:e3303. View abstract.

Cao TQ, Ngo QT, Seong SH, et al. Cholinesterase inhibitory alkaloids from the rhizomes of Coptis chinensis. Bioorg Chem. 2018;77:625-632. View abstract.