著者

中島 孝則 岩田 政則 縄田 修一 齋藤 博 中村 有貴 小林 靖奈 山元 俊憲 松田 佳和 木村 正幸

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.38, no.11, pp.702-707, 2012-11-10 (Released:2013-11-10)

参考文献数

8

被引用文献数

1 3

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We tried to optimize the formulation for the hospital preparation of mianserin hydrochloride (MS) suppositories. MS as the raw material for the preparation was obtained from Tetramide tablets (MS-T), which were ground. The physicopharmaceutical properties of MS suppositories with bases of Witepsol H15 (H15), Witepsol W35 (W35) and Witepsol S55 (S55) were compared to choose the optimal base for the suppositories. The preparation strength correlated negatively among the three bases. The heat of fusion of MS-H15 suppositories was significantly low relative to MS-W35 and MS-S55 suppositories. The average drug release rate of MS-H15 suppositories exhibited the highest level on moment analysis. Comprehensive evaluation of the properties of MS suppositories, including the heat of fusion due to the solubility of the preparation and the drug release rate indicated that H15 was the optimal base for MS suppositories. Additionally, we examined the optimal mixing rate of ground MS-T and H15. The preparation strength positively correlated with an increased mixing rate of ground MS-T. The mean dissolution time (MDT) of suppositories was reduced with an increased mixing rate of ground MS-T. These results suggested that 0.10 g ground MS-T combined with 0.8 g H15 as the base was the optimal formulation for the hospital preparation of MS suppositories.

著者

太田 美鈴 高橋 由里 深水 啓朗 伴野 和夫 岩田 政則 日高 慎二

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.36, no.6, pp.425-435, 2010 (Released:2012-03-09)

参考文献数

8

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Very little information is provided with OTC drugs and unlike prescription products,they do not have package inserts or interview forms.The purpose of this study was to examine the stability of 5 acetaminophen-containing OTC drugs by observing temporal changes in their characteristic physico-pharmaceutical parameters (hardness,mass,elution,drug migration) when they were preserved under conditions in which temperature and humidity were altered.From the results,it was assumed that 3 of the 5 drugs were affected by temperature and humidity,and that it was difficult to maintain stability when they were taken out of their packages.In particular,the drugs seemed to be more adversely affected the higher the temperature was and changes in parameters were greater.Also,the results of an elution test conducted after 24 hours of storage suggested that there was deterioration in 3 of the products.In conclusion,our findings clearly showed that patients need adequate explanation on how to keep OTC drugs.