著者

田坂 祐一 田中 亮裕 井門 敬子 田中 守 荒木 博陽

出版者

一般社団法人日本医療薬学会

雑誌

医療薬学 (ISSN:1346342X)

巻号頁・発行日

vol.40, no.4, pp.208-214, 2014-04-10 (Released:2015-04-10)

参考文献数

7

被引用文献数

18 22

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Pharmacists have increased the provision of pharmaceutical care services to patients. However, the financial benefit of various pharmaceutical interventions has not been well described. In this study, we estimated the original economic impact associated with pharmaceutical interventions by an evidenced-based approach.We classified pharmaceutical interventions into 12 items, which included preventions of serious adverse drug reactions (ADRs), and avoidance of drug interaction. The cost saving associated with preventions of serious ADRs was calculated as ¥2,140,000 per case based on the amount of costs that were paid by the Pharmaceuticals and Medical Devices Agency. Interventions to transvenous antimicrobial therapy were estimated to have a cost saving of ¥190,000 per case based on the literature in Japan. The rates of preventing serious ADRs related to chemotherapy orders, high-risk drugs and others were 5.21%, 3.91% and 2.6%, respectively, based on the literature in the United States. Using this rate, the values of intervention related to chemotherapy orders, high-risk drugs and others were ¥112,000, ¥84,000 and ¥56,000, respectively.The number of interventions was 209 per year, including 3 avoidances of serious ADRs. According to the number of interventions, we calculated that the total cost saving associated with pharmaceutical interventions was ¥22,816,000.This is the first study to estimate the economic impact associated with various pharmaceutical interventions of pharmacists in Japan. Evaluating the economic impact in relation to the pharmaceutical interventions is an important method for assessing the role of pharmacists.

著者

岡 夏未 近藤 真志 松原 秀樹 出石 啓治 田坂 祐一

出版者

公益社団法人 日本薬学会

雑誌

YAKUGAKU ZASSHI (ISSN:00316903)

巻号頁・発行日

vol.141, no.7, pp.979-984, 2021-07-01 (Released:2021-07-01)

参考文献数

12

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Drug-drug interactions (DDIs) are responsible for an increase in the incidence of adverse drug reactions. Although CYP is known to be involved in metabolic processes, the DDIs among three or more drugs that involve the same CYP molecular species have not been fully investigated. In this study, we retrospectively examined the relationship between the number of drugs and potential DDIs in metabolic processes involving CYPs in patients who picked up their prescribed drugs at 11 pharmacies in the Kojima Branch of the Okayama Pharmaceutical Association. We found that 66.5% of the 924 patients had potential DDIs; more than half of the patients who took six or more drugs had potential DDIs among three or more drugs. The mean number of CYP3A4-related drugs involved in potential DDIs was 3.52±1.56 in patients who took seven drugs, suggesting the need for careful monitoring of specific symptoms and blood test results for the early detection of adverse drug reactions caused by DDIs among three or more drugs.