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Published in: BMC Complementary Medicine and Therapies 1/2016

Open Access 01-12-2016 | Research article

Drug-induced liver injury associated with Complementary and Alternative Medicine: a review of adverse event reports in an Asian community from 2009 to 2014

Authors: Desmond Chun Hwee Teo, Patricia Suet Leng Ng, Siew Har Tan, Adena Theen Lim, Dorothy Su Lin Toh, Sui Yung Chan, Han Hui Cheong

Published in: BMC Complementary Medicine and Therapies | Issue 1/2016

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Abstract

Background

The use of Complementary and Alternative Medicine (CAM) has been increasing over the years. A recent review of adverse event reports (AERs) associated with CAM in Singapore found a notable number of AERs submitted. The objectives of this study are to analyse hepatotoxicity cases associated with CAM in Singapore based on spontaneous adverse event reporting to the Health Sciences Authority (HSA), and to highlight safety signals for specific herbal ingredients.

Methods

AERs associated with CAM and hepatotoxicity submitted to the Vigilance and Compliance Branch (VCB) of the HSA from 2009 to 2014 were compiled. The following information was extracted and analysed: Demographic information; time to onset; hospitalisation status; outcome; type of hepatotoxicity; ingredients of CAM, and the total daily doses (TDD); concurrent western medicines and health supplements; and reporter details.

Results

Fifty-seven reports were eligible for analysis. Thirty-five (61.4 %) cases involved Traditional Chinese Medicine (TCM). The Roussel Uclaf Causality Assessment Method was applied in 29 (82.9 %) of these cases, and the median score was 4 (range: 1–8). Chai Hu (Radix bupleuri) was suspected in 11 (31.4 %) cases. TDDs of most ingredients were within recommended doses of the Chinese Pharmacopoeia.

Conclusions

Drug-induced liver injury is still poorly understood and more objective assessments are warranted. Reporting of adverse events should be strongly advocated to facilitate future analyses and the understanding of risk-benefit profiles of CAM.
Literature
3.
go back to reference Rahman S, Singhal K. Problems in pharmacovigilance of medicinal products of herbal origin and means to minimize them. Uppsala Reports. 2002;17(Suppl):1–4. Rahman S, Singhal K. Problems in pharmacovigilance of medicinal products of herbal origin and means to minimize them. Uppsala Reports. 2002;17(Suppl):1–4.
4.
go back to reference Ernst E. Prevalence of use of complementary/alternative medicine: a systematic review. Bull World Health Organ. 2000;78(2):258–66. Ernst E. Prevalence of use of complementary/alternative medicine: a systematic review. Bull World Health Organ. 2000;78(2):258–66.
5.
go back to reference Frass M, Strassl RP, Friehs H, Mullner M, Kundi M, Kaye AD. Use and acceptance of complementary and alternative medicine among the general population and medical personnel: a systematic review. Ochsner J. 2012;12(1):45–56.PubMedPubMedCentral Frass M, Strassl RP, Friehs H, Mullner M, Kundi M, Kaye AD. Use and acceptance of complementary and alternative medicine among the general population and medical personnel: a systematic review. Ochsner J. 2012;12(1):45–56.PubMedPubMedCentral
6.
go back to reference Harris P, Rees R. The prevalence of complementary and alternative medicine use among the general population: a systematic review of the literature. Complement Ther Med. 2000;8(2):88–96.CrossRefPubMed Harris P, Rees R. The prevalence of complementary and alternative medicine use among the general population: a systematic review of the literature. Complement Ther Med. 2000;8(2):88–96.CrossRefPubMed
7.
go back to reference Al-Windi A. Determinants of complementary alternative medicine (CAM) use. Complement Ther Med. 2004;12(2–3):99–111.CrossRefPubMed Al-Windi A. Determinants of complementary alternative medicine (CAM) use. Complement Ther Med. 2004;12(2–3):99–111.CrossRefPubMed
8.
go back to reference Ernst E, Cassileth BR. The prevalence of complementary/alternative medicine in cancer: a systematic review. Cancer. 1998;83(4):777–82.CrossRefPubMed Ernst E, Cassileth BR. The prevalence of complementary/alternative medicine in cancer: a systematic review. Cancer. 1998;83(4):777–82.CrossRefPubMed
9.
go back to reference Pan CX, Morrison RS, Ness J, Fugh-Berman A, Leipzig RM. Complementary and alternative medicine in the management of pain, dyspnea, and nausea and vomiting near the end of life. A systematic review. J Pain Symptom Manage. 2000;20(5):374–87.CrossRefPubMed Pan CX, Morrison RS, Ness J, Fugh-Berman A, Leipzig RM. Complementary and alternative medicine in the management of pain, dyspnea, and nausea and vomiting near the end of life. A systematic review. J Pain Symptom Manage. 2000;20(5):374–87.CrossRefPubMed
10.
go back to reference Bishop FL, Prescott P, Chan YK, Saville J, von Elm E, Lewith GT. Prevalence of complementary medicine use in pediatric cancer: a systematic review. Pediatrics. 2010;125(4):768–76.CrossRefPubMed Bishop FL, Prescott P, Chan YK, Saville J, von Elm E, Lewith GT. Prevalence of complementary medicine use in pediatric cancer: a systematic review. Pediatrics. 2010;125(4):768–76.CrossRefPubMed
11.
go back to reference Hyodo I, Amano N, Eguchi K, Narabayashi M, Imanishi J, Hirai M, Nakano T, Takashima S. Nationwide survey on complementary and alternative medicine in cancer patients in Japan. J Clin Oncol. 2005;23(12):2645–54.CrossRefPubMed Hyodo I, Amano N, Eguchi K, Narabayashi M, Imanishi J, Hirai M, Nakano T, Takashima S. Nationwide survey on complementary and alternative medicine in cancer patients in Japan. J Clin Oncol. 2005;23(12):2645–54.CrossRefPubMed
12.
go back to reference Coulter ID, Willis EM. The rise and rise of complementary and alternative medicine: a sociological perspective. Med J Aust. 2004;180(11):587–9.PubMed Coulter ID, Willis EM. The rise and rise of complementary and alternative medicine: a sociological perspective. Med J Aust. 2004;180(11):587–9.PubMed
14.
go back to reference Xu KT. Socioeconomic aspects of the use of complmentary and alternative medicine. In: Watson RR, editor. Complementary and Alternative Therapies and the Aging Population: An Evidence-Based Approach. United States of America: Academic; 2009. p. 275–98. Xu KT. Socioeconomic aspects of the use of complmentary and alternative medicine. In: Watson RR, editor. Complementary and Alternative Therapies and the Aging Population: An Evidence-Based Approach. United States of America: Academic; 2009. p. 275–98.
15.
go back to reference Ayers SL, Kronenfeld JJ. Delays in seeking conventional medical care and complementary and alternative medicine utilization. Health Serv Res. 2012;47(5):2081–96.CrossRefPubMedPubMedCentral Ayers SL, Kronenfeld JJ. Delays in seeking conventional medical care and complementary and alternative medicine utilization. Health Serv Res. 2012;47(5):2081–96.CrossRefPubMedPubMedCentral
17.
go back to reference Lim MK, Sadarangani P, Chan HL, Heng JY. Complementary and alternative medicine use in multiracial Singapore. Complement Ther Med. 2005;13(1):16–24.CrossRefPubMed Lim MK, Sadarangani P, Chan HL, Heng JY. Complementary and alternative medicine use in multiracial Singapore. Complement Ther Med. 2005;13(1):16–24.CrossRefPubMed
18.
go back to reference The statutes of the Republic of Singapore: Medicines Act, Chapter 176, Original Enactment: Act 52 of 1975 (Revised Ed. 1985). 1987. The statutes of the Republic of Singapore: Medicines Act, Chapter 176, Original Enactment: Act 52 of 1975 (Revised Ed. 1985). 1987.
20.
go back to reference Harris PE, Cooper KL, Relton C, Thomas KJ. Prevalence of complementary and alternative medicine (CAM) use by the general population: a systematic review and update. Int J Clin Pract. 2012;66(10):924–39.CrossRefPubMed Harris PE, Cooper KL, Relton C, Thomas KJ. Prevalence of complementary and alternative medicine (CAM) use by the general population: a systematic review and update. Int J Clin Pract. 2012;66(10):924–39.CrossRefPubMed
21.
go back to reference Patel DN, Low WL, Tan LL, Tan MM, Zhang Q, Low MY, Chan CL, Koh HL. Adverse events associated with the use of complementary medicine and health supplements: an analysis of reports in the Singapore pharmacovigilance database from 1998 to. Clin Toxicol(Phila) 2012. 2009;50(6):481–9. Patel DN, Low WL, Tan LL, Tan MM, Zhang Q, Low MY, Chan CL, Koh HL. Adverse events associated with the use of complementary medicine and health supplements: an analysis of reports in the Singapore pharmacovigilance database from 1998 to. Clin Toxicol(Phila) 2012. 2009;50(6):481–9.
22.
go back to reference Wai CT. Presentation of drug-induced liver injury in Singapore. Singapore Med J. 2006;47(2):116–20.PubMed Wai CT. Presentation of drug-induced liver injury in Singapore. Singapore Med J. 2006;47(2):116–20.PubMed
23.
go back to reference Wai CT, Tan BH, Chan CL, Sutedja DS, Lee YM, Khor C, Lim SG. Drug-induced liver injury at an Asian center: a prospective study. Liver Int. 2007;27(4):465–74.CrossRefPubMed Wai CT, Tan BH, Chan CL, Sutedja DS, Lee YM, Khor C, Lim SG. Drug-induced liver injury at an Asian center: a prospective study. Liver Int. 2007;27(4):465–74.CrossRefPubMed
24.
go back to reference Raschi E, De Ponti F. Drug- and herb-induced liver injury: progress, current challenges and emerging signals of post-marketing risk. World J Hepatol. 2015;7(13):1761–71.CrossRefPubMedPubMedCentral Raschi E, De Ponti F. Drug- and herb-induced liver injury: progress, current challenges and emerging signals of post-marketing risk. World J Hepatol. 2015;7(13):1761–71.CrossRefPubMedPubMedCentral
25.
go back to reference Teschke R, Schwarzenboeck A, Eickhoff A, Frenzel C, Wolff A, Schulze J. Clinical and causality assessment in herbal hepatotoxicity. Expert Opin Drug Saf. 2013;12(3):339–66.CrossRefPubMed Teschke R, Schwarzenboeck A, Eickhoff A, Frenzel C, Wolff A, Schulze J. Clinical and causality assessment in herbal hepatotoxicity. Expert Opin Drug Saf. 2013;12(3):339–66.CrossRefPubMed
26.
go back to reference Benichou C. Criteria of drug-induced liver disorders. Report of an international consensus meeting. J Hepatol. 1990;11(2):272–6.CrossRefPubMed Benichou C. Criteria of drug-induced liver disorders. Report of an international consensus meeting. J Hepatol. 1990;11(2):272–6.CrossRefPubMed
27.
go back to reference Danan G, Benichou C. Causality assessment of adverse reactions to drugs-I. A novel method based on the conclusions of international consensus meetings: application to drug-induced liver injuries. J Clin Epidemiol. 1993;46(11):1323–30.CrossRefPubMed Danan G, Benichou C. Causality assessment of adverse reactions to drugs-I. A novel method based on the conclusions of international consensus meetings: application to drug-induced liver injuries. J Clin Epidemiol. 1993;46(11):1323–30.CrossRefPubMed
28.
go back to reference Benichou C, Danan G, Flahault A. Causality assessment of adverse reactions to drugs--II. An original model for validation of drug causality assessment methods: case reports with positive rechallenge. J Clin Epidemiol. 1993;46(11):1331–6.CrossRefPubMed Benichou C, Danan G, Flahault A. Causality assessment of adverse reactions to drugs--II. An original model for validation of drug causality assessment methods: case reports with positive rechallenge. J Clin Epidemiol. 1993;46(11):1331–6.CrossRefPubMed
29.
go back to reference Garcia-Cortes M, Stephens C, Lucena MI, Fernandez-Castaner A, Andrade RJ. Causality assessment methods in drug induced liver injury: strengths and weaknesses. J Hepatol. 2011;55(3):683–91.CrossRefPubMed Garcia-Cortes M, Stephens C, Lucena MI, Fernandez-Castaner A, Andrade RJ. Causality assessment methods in drug induced liver injury: strengths and weaknesses. J Hepatol. 2011;55(3):683–91.CrossRefPubMed
30.
go back to reference Garcia-Cortes M, Lucena MI, Andrade RJ, Camargo R, Alcantara R. Is the Naranjo probability scale accurate enough to ascertain causality in drug-induced hepatotoxicity? Ann Pharmacother. 2004;38(9):1540–1.CrossRefPubMed Garcia-Cortes M, Lucena MI, Andrade RJ, Camargo R, Alcantara R. Is the Naranjo probability scale accurate enough to ascertain causality in drug-induced hepatotoxicity? Ann Pharmacother. 2004;38(9):1540–1.CrossRefPubMed
31.
go back to reference Teschke R, Schulze J. Suspected herbal hepatotoxicity: requirements for appropriate causality assessment by the US pharmacopeia. Drug Saf. 2012;35(12):1091–7.CrossRefPubMed Teschke R, Schulze J. Suspected herbal hepatotoxicity: requirements for appropriate causality assessment by the US pharmacopeia. Drug Saf. 2012;35(12):1091–7.CrossRefPubMed
32.
go back to reference Lucena MI, Camargo R, Andrade RJ, Perez-Sanchez CJ, Sanchez De La Cuesta F. Comparison of two clinical scales for causality assessment in hepatotoxicity. Hepatology. 2001;33(1):123–30.CrossRefPubMed Lucena MI, Camargo R, Andrade RJ, Perez-Sanchez CJ, Sanchez De La Cuesta F. Comparison of two clinical scales for causality assessment in hepatotoxicity. Hepatology. 2001;33(1):123–30.CrossRefPubMed
35.
go back to reference Liss G, Lewis JH. Drug-induced liver injury: what was new in 2008? Expert Opin Drug Metab Toxicol. 2009;5(8):843–60.CrossRefPubMed Liss G, Lewis JH. Drug-induced liver injury: what was new in 2008? Expert Opin Drug Metab Toxicol. 2009;5(8):843–60.CrossRefPubMed
36.
go back to reference Teschke R, Schwarzenboeck A, Hennermann KH. Causality assessment in hepatotoxicity by drugs and dietary supplements. Br J Clin Pharmacol. 2008;66(6):758–66.CrossRefPubMedPubMedCentral Teschke R, Schwarzenboeck A, Hennermann KH. Causality assessment in hepatotoxicity by drugs and dietary supplements. Br J Clin Pharmacol. 2008;66(6):758–66.CrossRefPubMedPubMedCentral
37.
go back to reference Itoh S, Marutani K, Nishijima T, Matsuo S, Itabashi M. Liver injuries induced by herbal medicine, Syo-saiko-to (xiao-chai-hu-tang). Dig Dis Sci. 1995;40(8):1845–8.CrossRefPubMed Itoh S, Marutani K, Nishijima T, Matsuo S, Itabashi M. Liver injuries induced by herbal medicine, Syo-saiko-to (xiao-chai-hu-tang). Dig Dis Sci. 1995;40(8):1845–8.CrossRefPubMed
38.
go back to reference Drew AK, Whyte IM, Bensoussan A, Dawson AH, Zhu X, Myers SP. Chinese herbal medicine toxicology database: monograph on Herba Asari, “xi xin”. J Toxicol Clin Toxicol. 2002;40(2):169–72.CrossRefPubMed Drew AK, Whyte IM, Bensoussan A, Dawson AH, Zhu X, Myers SP. Chinese herbal medicine toxicology database: monograph on Herba Asari, “xi xin”. J Toxicol Clin Toxicol. 2002;40(2):169–72.CrossRefPubMed
40.
42.
43.
go back to reference Hsu L-M, Huang Y-S, Tsay S-H, Chang F-Y, Lee S-D. Acute hepatitis induced by Chinese hepatoprotective herb, Xiao-Chai-Hu-Tang. J Chin Med Assoc. 2006;69(2):86–8.CrossRefPubMed Hsu L-M, Huang Y-S, Tsay S-H, Chang F-Y, Lee S-D. Acute hepatitis induced by Chinese hepatoprotective herb, Xiao-Chai-Hu-Tang. J Chin Med Assoc. 2006;69(2):86–8.CrossRefPubMed
44.
go back to reference Leung AY. Traditional toxicity documentation of Chinese Materia Medica - An overview. Toxicol Pathol. 2006;34(4):319–26.CrossRefPubMed Leung AY. Traditional toxicity documentation of Chinese Materia Medica - An overview. Toxicol Pathol. 2006;34(4):319–26.CrossRefPubMed
45.
go back to reference Khan S, Khan I, Walker L: Botanical supplements and hepatotoxicity. In: Hepatotoxicity. edn. Chichester, UK: John Wiley & Sons, Ltd; 2008: 589–606. Khan S, Khan I, Walker L: Botanical supplements and hepatotoxicity. In: Hepatotoxicity. edn. Chichester, UK: John Wiley & Sons, Ltd; 2008: 589–606.
46.
47.
go back to reference Teschke R, Wolff A, Frenzel C, Schulze J, Eickhoff A. Herbal hepatotoxicity: a tabular compilation of reported cases. Liver Int. 2012;32(10):1543–56.CrossRefPubMed Teschke R, Wolff A, Frenzel C, Schulze J, Eickhoff A. Herbal hepatotoxicity: a tabular compilation of reported cases. Liver Int. 2012;32(10):1543–56.CrossRefPubMed
48.
go back to reference Teschke R, Frenzel C, Glass X, Schulze J, Eickhoff A. Herbal hepatotoxicity: a critical review. Br J Clin Pharmacol. 2013;75(3):630–6.PubMedPubMedCentral Teschke R, Frenzel C, Glass X, Schulze J, Eickhoff A. Herbal hepatotoxicity: a critical review. Br J Clin Pharmacol. 2013;75(3):630–6.PubMedPubMedCentral
50.
go back to reference Navarro VJ, Lucena MI. Hepatotoxicity induced by herbal and dietary supplements. Semin Liver Dis. 2014;34(2):172–93.CrossRefPubMed Navarro VJ, Lucena MI. Hepatotoxicity induced by herbal and dietary supplements. Semin Liver Dis. 2014;34(2):172–93.CrossRefPubMed
51.
go back to reference Wang G-Q, Deng Y-Q, Hou F-Q. Overview of drug-induced liver injury in China. Clin Liver Dis. 2014;4(1):26–9.CrossRef Wang G-Q, Deng Y-Q, Hou F-Q. Overview of drug-induced liver injury in China. Clin Liver Dis. 2014;4(1):26–9.CrossRef
52.
go back to reference Björnsson ES. Drug-induced liver injury: An overview over the most critical compounds. Arch Toxicol. 2015;89(3):327–34.CrossRefPubMed Björnsson ES. Drug-induced liver injury: An overview over the most critical compounds. Arch Toxicol. 2015;89(3):327–34.CrossRefPubMed
53.
go back to reference Stickel F, Shouval D. Hepatotoxicity of herbal and dietary supplements: an update. Arch Toxicol. 2015;89(6):851–65.CrossRefPubMed Stickel F, Shouval D. Hepatotoxicity of herbal and dietary supplements: an update. Arch Toxicol. 2015;89(6):851–65.CrossRefPubMed
54.
go back to reference Kando JC, Yonkers KA, Cole JO. Gender as a risk factor for adverse events to medications. Drugs. 1995;50(1):1–6.CrossRefPubMed Kando JC, Yonkers KA, Cole JO. Gender as a risk factor for adverse events to medications. Drugs. 1995;50(1):1–6.CrossRefPubMed
55.
go back to reference Miller MA. Gender-based differences in the toxicity of pharmaceuticals--the Food and Drug Administration’s perspective. Int J Toxicol. 2001;20(3):149–52.CrossRefPubMed Miller MA. Gender-based differences in the toxicity of pharmaceuticals--the Food and Drug Administration’s perspective. Int J Toxicol. 2001;20(3):149–52.CrossRefPubMed
57.
go back to reference Knell ME. Adverse reactions. In: Pharmaceutical Care with Dietary Supplements: Concepts and Common Sense. edn. Edited by McQueen CE. Bethesda: American Society of Health-System Pharmacists; 2006: 79–112. Knell ME. Adverse reactions. In: Pharmaceutical Care with Dietary Supplements: Concepts and Common Sense. edn. Edited by McQueen CE. Bethesda: American Society of Health-System Pharmacists; 2006: 79–112.
58.
go back to reference Walker A. The relation between voluntary notification and material risk in dietary supplement safety. United States of America: Food And Drug Administration Commissioned Paper; 2000. FDA Docket 00N-1200. Walker A. The relation between voluntary notification and material risk in dietary supplement safety. United States of America: Food And Drug Administration Commissioned Paper; 2000. FDA Docket 00N-1200.
59.
go back to reference Chow WH, Chang P, Lee SC, Wong A, Shen HM, Verkooijen HM. Complementary and alternative medicine among Singapore cancer patients. Ann Acad Med Singapore. 2010;39(2):129–35.PubMed Chow WH, Chang P, Lee SC, Wong A, Shen HM, Verkooijen HM. Complementary and alternative medicine among Singapore cancer patients. Ann Acad Med Singapore. 2010;39(2):129–35.PubMed
60.
go back to reference Shih V, Chiang JY, Chan A. Complementary and alternative medicine (CAM) usage in Singaporean adult cancer patients. Ann Oncol. 2009;20(4):752–7.CrossRefPubMed Shih V, Chiang JY, Chan A. Complementary and alternative medicine (CAM) usage in Singaporean adult cancer patients. Ann Oncol. 2009;20(4):752–7.CrossRefPubMed
62.
go back to reference Teschke R, Lebot V. Proposal for a kava quality standardization code. Food Chem Toxicol. 2011;49(10):2503–16.CrossRefPubMed Teschke R, Lebot V. Proposal for a kava quality standardization code. Food Chem Toxicol. 2011;49(10):2503–16.CrossRefPubMed
64.
go back to reference Posadzki P, Watson LK, Ernst E. Adverse effects of herbal medicines: an overview of systematic reviews. Clin Med(Lond). 2013;13(1):7–12.CrossRef Posadzki P, Watson LK, Ernst E. Adverse effects of herbal medicines: an overview of systematic reviews. Clin Med(Lond). 2013;13(1):7–12.CrossRef
65.
go back to reference Ernst E. Herbal remedies for anxiety - a systematic review of controlled clinical trials. Phytomedicine. 2006;13(3):205–8.CrossRefPubMed Ernst E. Herbal remedies for anxiety - a systematic review of controlled clinical trials. Phytomedicine. 2006;13(3):205–8.CrossRefPubMed
66.
go back to reference Ernst E, Pittler MH. Efficacy of ginger for nausea and vomiting: a systematic review of randomized clinical trials. Br J Anaesth. 2000;84(3):367–71.CrossRefPubMed Ernst E, Pittler MH. Efficacy of ginger for nausea and vomiting: a systematic review of randomized clinical trials. Br J Anaesth. 2000;84(3):367–71.CrossRefPubMed
67.
go back to reference Kronenberg F, Fugh-Berman A. Complementary and alternative medicine for menopausal symptoms: a review of randomized, controlled trials. Ann Intern Med. 2002;137(10):805–13.CrossRefPubMed Kronenberg F, Fugh-Berman A. Complementary and alternative medicine for menopausal symptoms: a review of randomized, controlled trials. Ann Intern Med. 2002;137(10):805–13.CrossRefPubMed
68.
go back to reference Long L, Soeken K, Ernst E. Herbal medicines for the treatment of osteoarthritis: a systematic review. Rheumatology (Oxford). 2001;40(7):779–93.CrossRef Long L, Soeken K, Ernst E. Herbal medicines for the treatment of osteoarthritis: a systematic review. Rheumatology (Oxford). 2001;40(7):779–93.CrossRef
69.
go back to reference Vogler BK, Pittler MH, Ernst E. The efficacy of ginseng. A systematic review of randomised clinical trials. Eur J Clin Pharmacol. 1999;55(8):567–75.CrossRefPubMed Vogler BK, Pittler MH, Ernst E. The efficacy of ginseng. A systematic review of randomised clinical trials. Eur J Clin Pharmacol. 1999;55(8):567–75.CrossRefPubMed
70.
go back to reference Kamsu-Foguem B, Foguem C. Adverse drug reactions in some African herbal medicine: literature review and stakeholders’ interview. Integr Med Res. 2014;3(3):126–32.CrossRef Kamsu-Foguem B, Foguem C. Adverse drug reactions in some African herbal medicine: literature review and stakeholders’ interview. Integr Med Res. 2014;3(3):126–32.CrossRef
Metadata
Title
Drug-induced liver injury associated with Complementary and Alternative Medicine: a review of adverse event reports in an Asian community from 2009 to 2014
Authors
Desmond Chun Hwee Teo
Patricia Suet Leng Ng
Siew Har Tan
Adena Theen Lim
Dorothy Su Lin Toh
Sui Yung Chan
Han Hui Cheong
Publication date
01-12-2016
Publisher
BioMed Central
Published in
BMC Complementary Medicine and Therapies / Issue 1/2016
Electronic ISSN: 2662-7671
DOI
https://doi.org/10.1186/s12906-016-1168-z

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