著者

高橋 佳子 樋上 智子 倉本 美佳 檜垣 文子 山下 典子 合田 昌子 足立 亜紀子 濱口 常男 門林 宗男

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.30, no.7, pp.475-482, 2004-07-10 (Released:2011-03-04)

参考文献数

15

被引用文献数

1 3

---

To determine the influence of the angle of holding an eye medication container on the squeezing force needed for each drop of the medication and drop volume, we measured squeezing force and drop weight using a force gauge for 11 prod ucts commercially available in Japan, at 3 different angles to the horizontal surface-90°, 60° and 45°. At 90°, the squeezing force for each drop varied from 0.770kg (Tobracin®) to 1.575kg (Timoptol® 0.25%) and at 60° and 45°, the squeezing force decreased for all products except KetasR. Thus the squeezing force was affected by the angle of holding the container. At 90°, drop weight varied from 33mg (Ketas®) to 44mg (Tobracin®). At 60° and 45°, drop weight decreased for all products except Hyalein® 0.1, Kary Uni® and Sanpilo® 2% (tip and cap type). These results show that the angle of holding an eye medication container is an important factor because of the influence it has on drop size and squeezing force. For this reason, the optimal angle for patients to hold eye medication containers should be investigated in greater depth.

著者

濱口 常男 鎌田 彩 村岡 玲子 倉本 美佳 中元 智子 志方 敏幸 門林 宗男

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.125, no.6, pp.525-530, 2005-06-01 (Released:2005-06-01)

参考文献数

8

被引用文献数

2 3

---

For the purpose of quality evaluation of magnesium oxide (MgO) tablets, we considered the dissolution test method with changes in the pH of the dissolution medium as an indicator and studied the elution behavior of MgO from commercial MgO tablets. We also studied the effects of particle size on the elution rate of MgO from MgO tablets. A dissolution test was carried out using the rotating basket method in 100 ml of the first fluid (pH 1.2). The stirring speed was set at 200 rpm. The elution behaviors of MgO from two products were markedly different. The medium pH for the sample MM (Magmit) tablet after 15 min reached 9.5 but that for ML (Maglax) tablet was 2.7 even after 60 min. The apparent solubility of MgO in 100 ml of the first fluid were, respectively, 175 mg and 100 mg when medium pH as 9.5 and 1.5. The low dissolution of ML tablets is thought to be due to the large particle size (average particle size r = 226 μm) or due to the effects of additives on elution. These results suggest that neutralizing activity after ingestion of MgO tablets and subsequent laxative effects may, when conditions after ingestion of MM tablets and after ingestion of ML tablets are compared, produce differences between them. We found that the dissolution test method with pH as an indicator is useful in assessing the dissolution behavior of MgO preparations.