著者

木村 優花 川上 和宜 中村 匡志 横川 貴志 清水 久範 小林 一男 青山 剛 鈴木 亘 羽鳥 正浩 鈴木 賢一 高張 大亮 小倉 真理子 陳 勁松 中山 厳馬 若槻 尊 山口 研成 山口 正和

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.143, no.12, pp.1075-1081, 2023-12-01 (Released:2023-12-01)

参考文献数

21

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Since it is important that patients take their oral anticancer therapy as prescribed, pharmacists need to assess adherence. In addition, oral anticancer drugs are expensive, and reuse of leftover drugs at outpatient pharmacy clinics is useful in reducing drug costs. The present study aimed to clarify when and why patients have leftover capecitabine tablets, and the cost of leftover capecitabine tablets reused at an outpatient pharmacy clinic, focusing on adjuvant capecitabine plus oxaliplatin (CAPOX) chemotherapy for gastric cancer. We retrospectively studied patients who received adjuvant CAPOX chemotherapy for gastric cancer between November 1, 2015, and April 30, 2021, at the Cancer Institute Hospital of the Japanese Foundation for Cancer Research. The cost of leftover capecitabine reused by pharmacists was calculated based on the National Health Insurance drug price standard for the study period. This study included 64 patients who received adjuvant CAPOX chemotherapy. Thirty-seven patients had 152 leftover capecitabine tablets. The most common reasons for leftover capecitabine tablets were nausea and vomiting (21.7%), missed doses (18.4%), and diarrhea (13.2%). The leftover capecitabine tablets for 25 patients were reused at the outpatient pharmacy clinic at a cost of JPY 604142.8 (JPY 24165.7 per patient). The study results suggest that evaluating capecitabine adherence and the reasons for leftover capecitabine tablets at outpatient pharmacy clinics as well as reusing leftover medication can contribute to reducing drug costs.

著者

清水 久範 池田 俊也 坂巻 弘之 矢島 秀一 池上 直己 村山 純一郎

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.41, no.3, pp.153-162, 2015-03-10 (Released:2016-03-10)

参考文献数

22

被引用文献数

1 1

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To evaluate the economic impact of regimens including the oral anticancer drug S-1 (a combination of tegafur, gimeracil, and oteracil), we performed cost-minimization analysis to compare the medical costs of S-1 plus irinotecan (IRIS) with those of conventional intravenous treatment with oxaliplatin or irinotecan plus fluorouracil and folinic acid (mFOLFOX6/FOLFIRI) in patients with advanced colorectal cancer. Patients with advanced colorectal cancer were extracted from the ordering system database for outpatients in Showa University Hospital. Direct medical costs and patients' time-related costs were calculated from the hospital billing data and the average Japanese labor wage, respectively. The results were analyzed from a limited societal perspective. Twenty-nine patients with advanced colorectal cancer were identified, and 25 IRIS regimens, 11 mFOLFOX6 regimens, and 5 FOLFIRI regimens were registered. Mean (± SE) monthly costs of treatment were 183,682 (± 4,767) yen for IRIS regimens and 279,077(± 13,345) yen for mFOLFOX6/FOLFIRI regimens. The monthly cost of IRIS regimens was significantly lower than that of mFOLFOX6/FOLFIRI regimens (P < 0.0001). IRIS regimens are cost-saving compared to mFOLFOX6 or FOLFIRI regimens for the management of advanced colorectal cancer.