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Reducing Drug–Herb Interaction Risk with a Computerized Reminder System

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Reducing Drug–Herb Interaction Risk with a Computerized Reminder System Journal name: Therapeutics and Clinical Risk Management Article Designation: Original Research Year: 2015 Volume: 11 Therapeutics and Clinical Risk Management Dovepress Running head verso: Lin et al Running head recto: Reminder system for drug–herb interaction open access to scientific and medical research DOI: http://dx.doi.org/10.2147/TCRM.S78124 Open Access Full Text Article ORIGINAL RESEARCH Reducing drug–herb interaction risk with a computerized reminder system Sheng-Shing Lin1,2 Background: Traditional Chinese medicine (TCM) and Western medicine are both popular Chiu-Lin Tsai3 in Taiwan. Approximately 14.1% of Taiwanese residents use Western drugs and Chinese herbs Ching-Yeh Tu3 concurrently; therefore, drug–herb interaction is critical to patient safety. This paper presents Ching-Liang Hsieh2,4,5 a new procedure for reducing the risk of drug interactions. Methods: Hospital computer systems are modified to ensure that drug–herb interactions are 1Graduate Institute of Chinese Medicine, College of Chinese automatically detected when a TCM practitioner is writing a prescription. A pop-up reminder Medicine, China Medical University, appears, warning of interactions, and the practitioner may adjust doses, delete herbs, or leave the 2 Department of Chinese Medicine, prescription unchanged. A pharmacist will receive interaction information through the system China Medical University Hospital, 3Division of Chinese Medicine, and provide health education to the patient. Department of Pharmacy, China Results: During the 2011–2013 study period, 256 patients received 891 herbal prescriptions Medical University Hospital, with potential drug–herb interactions. Three of the 50 patients who concurrently used ginseng 4Graduate Institute of Integrated For personal use only. Medicine, College of Chinese and antidiabetic drugs manifested hypoglycemia (fasting blood sugar level 70 mg/dL). Medicine, China Medical University, Conclusion: Drug–herb interactions can cause adverse reactions. A computerized reminder 5Research Center for Chinese Medicine and Acupuncture, China system can enable TCM practitioners to reduce the risk of drug–herb interactions. In addition, Medical University, Taichung, Taiwan health education for patients is crucial in avoiding adverse reaction by the interactions. Keywords: Traditional Chinese medicine, Western medicine, adverse reaction Background Taiwan’s National Health Insurance program has covered both Western medicine (WM) and traditional Chinese medicine (TCM) since its inauguration in 1995. TCM is popular in Taiwan, and more than 60% of the people used it between 1996 and 2001.1 In 2007, approximately 14.1% of the people in Taiwan used TCM herbal products and conventional WM drug concurrently.2 Therefore, the drug–herb interaction is critical to patient safety. For example, concomitant use of danshen (Salvia miltiorrhiza) and war- Therapeutics and Clinical Risk Management downloaded from https://www.dovepress.com/ by 54.70.40.11 on 10-Dec-2018 farin may exaggerate the anticoagulant effect of warfarin and possibly cause bleeding.3,4 Korean/Asian ginseng (Panax ginseng) and American ginseng (Panax quinquefolius) have antidiabetic effects;5–9 using ginseng concurrently with oral hypoglycemic agents (OHAs) or insulin injections may increase the risk of hypoglycemia.10 Concomitant use of red yeast rice with cyclosporine may induce rhabdomyolysis.11 In most countries, people obtain herbal products outside of hospitals; therefore, physicians may not determine what herbs patients have consumed. Furthermore, people Correspondence: Ching-Liang Hsieh who sell herbal products may have insufficient knowledge about modern drugs and Graduate Institute of Integrated Medicine, drug–herb interactions. In Taiwan, TCM practitioners are certified through a national College of Chinese Medicine, China board examination and have some knowledge of modern drugs. Medical University, 91 Hsueh-Shih Road, Taichung 40402, Taiwan In China Medical University Hospital, Taichung, Taiwan, the TCM department’s Tel +886 4 2205 3366 ext 3500 medical records are stored in the same database as those of the WM department. Fax +886 4 2203 7690 Email [email protected] When writing a prescription, TCM practitioners and WM doctors may view previous submit your manuscript | www.dovepress.com Therapeutics and Clinical Risk Management 2015:11 247–253 247 Dovepress © 2015 Lin et al. This work is published by Dove Medical Press Limited, and licensed under Creative Commons Attribution – Non Commercial (unported, v3.0) License. The full terms of the License are available at http://creativecommons.org/licenses/by-nc/3.0/. Non-commercial uses of the work are permitted without any further http://dx.doi.org/10.2147/TCRM.S78124 permission from Dove Medical Press Limited, provided the work is properly attributed. Permissions beyond the scope of the License are administered by Dove Medical Press Limited. Information on how to request permission may be found at: http://www.dovepress.com/permissions.php Powered by TCPDF (www.tcpdf.org) 1 / 1 Lin et al Dovepress drug and herbal prescriptions directly through the computer keywords “drug-herb interaction”, as well as individual herb system. However, drug–herb interactions may not be identi- names plus the keyword “drug interaction” were performed. fied because practitioners and doctors are too busy to assess Theses and dissertations related to a single herb or herbal previous prescriptions by another doctor, or because they combinations that were discussed with drug interactions were lack the time to consider possible interactions. included; theses and dissertations related to herbs unavailable In 2011, we modified the herb prescription process in at our hospital were excluded. our hospital’s TCM department. A computerized reminder system was programmed to search for drug interactions and Creating a drug–herb interaction automatically display possible interactions in a pop-up win- database dow. TCM practitioners may consider the interactions and We collected drug–herb interaction data from PubMed, study then adjust doses or delete herbs. reports, theses, and dissertations. A database was created with columns for drug name, herb name, interaction, mechanism, Methods symptoms, management, suggestion, severity, documenta- Literature review tion, case number, article title, and journal title. Journals from PubMed We performed the following keyword searches in PubMed: 12 Severity definitions and documentation 1. General concept: “drug herb interaction”; “herb inter- We used the definitions inDrug Interaction Facts 2014: the action”; “traditional Chinese medicine” OR “Chinese Authority on Drug Interactions to identify the severity of medication” OR “herbal medicine” AND “interaction”. drug–herb interactions.15 2. Specifying individual herb names without drug names: for example, “Panax ginseng” AND “interaction”; Drug–herb interaction severity categories “American ginseng” AND “interaction”; “Danshen” Major drug–herb interactions are effects that are potentially AND “interaction”; “Dong Quai” AND “interaction”; life-threatening or capable of causing permanent damage. For personal use only. and “Ma Huang” AND “interaction”. Moderate drug–herb interactions are effects that may cause 3. Specifying herb names and drug names: for example, deterioration in a patient’s clinical status. Further treatment, “Panax ginseng” AND “digoxin”; “Panax ginseng” hospitalization, or an extended hospital stay may be neces- AND “warfarin”; “Panax ginseng” AND “hypoglycemic sary. Minor drug–herb interactions are effects that are mild; agent”; and “Danshen” AND “warfarin”. consequences may be regarded as bothersome or may be The searches were performed in 2010 and were restricted unnoticeable and do not notably affect the therapeutic out- to English-language results from 1986 to 2010. Articles were come. Further treatment is usually not required. selected according to title and abstract by using the follow- ing criteria: 1) at least one herb and at least one drug were Documentation mentioned, and the interaction between the herb and drug was Established drug–herb interactions are those that are proven described; and 2) only articles about herbs that are available to occur in well-controlled studies. Probable drug–herb in Taiwan were included. interactions are those that are likely but not proven clini- Therapeutics and Clinical Risk Management downloaded from https://www.dovepress.com/ by 54.70.40.11 on 10-Dec-2018 cally. Suspected drug–herb interactions are those that may Studies in Taiwan occur, with some good data but requiring more study. Pos- On Taiwan’s Government Research Bulletin (GRB) sible drug–herb interactions are those that could occur, but website,13 searches in Chinese language for the keyword data are limited. Unlikely drug–herb interactions are those “drug-herb interaction”, as well as individual herb names that are doubtful, with no strong evidence of an altered plus the keyword “drug interaction” were performed. Stud- clinical effect. ies related to a single herb or to herbal combinations that were discussed with drug interactions were included; studies Committee conference related to herbs unavailable at our hospital were excluded. The Safety of Herb Usage Committee comprised three physicians (WM doctors), three TCM practitioners, four Theses and dissertations in Taiwan pharmacists, one nurse, and one computer programmer. The On the Taiwan National Digital Library of Theses and severity and documentation of drug–herb
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