JP2014196279A - ナルフラフィン含有経皮吸収貼付剤 - Google Patents
ナルフラフィン含有経皮吸収貼付剤 Download PDFInfo
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- Medicinal Preparation (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Abstract
Description
すなわち、本発明は、以下の(1)〜(3)に示したものである。
(1)粘着層中でナルフラフィンの分解を抑制できる経皮吸収貼付剤であって、粘着層に粘着基剤、粘着付与樹脂、薬物溶解剤およびナルフラフィンを含有し、粘着層の総重量に対して、粘着付与樹脂として脂環族飽和炭化水素樹脂またはテルペン重合体を5〜40重量%含有することを特徴とするナルフラフィン含有経皮吸収貼付剤。
(2)粘着基剤がポリイソブチレンまたはスチレン−イソプレン−スチレンゴムである上記(1)に記載のナルフラフィン含有経皮吸収貼付剤。
(3)薬物溶解剤が炭酸プロピレンまたはクロタミトンである上記(1)または(2)に記載のナルフラフィン含有経皮吸収貼付剤。
(実施例1)
表1に示す配合に基づき、後述する調製法1の方法により調製し、本発明のナルフラフィン含有経皮吸収貼付剤1を得た。得られたナルフラフィン含有経皮吸収貼付剤1を試験例1に従って安定性試験を行った際の薬物残存率は、99%であった。結果を表2に示す。
ポリイソブチレンをヘキサンに溶解し、ポリイソブチレン溶液(ポリイソブチレン濃度:10質量%)を調製した。ナルフラフィン塩酸塩を流動パラフィンに分散させたのち、ポリイソブチレン溶液および脂環族飽和炭化水素樹脂、クロタミトン、モノエタノールアミンと練合した。得られた練合物を、ポリエステル製の支持体表面に塗布展延して乾燥させ、乾燥後の厚みが30μmとなるように粘着層を形成した。粘着層にポリエステル製の剥離材を被覆し、所望の形状に切断して本発明のナルフラフィン含有経皮吸収貼付剤を得た。
安定性試験
前述の実施例1のナルフラフィン含有経皮吸収貼付剤1、後述する実施例2のナルフラフィン含有経皮吸収貼付剤2および比較例1の経皮吸収貼付剤1を用い、次に示す方法で安定性試験を行った。
被験製剤をアルミ製の袋に入れ密封し、60℃で保存した。保存開始時および保存開始1週間後に、ナルフラフィン含有量を高速液体クロマトグラフィーによって定量した。保存開始時のナルフラフィン含有量に対する1週間後のナルフラフィン含有量を百分率で算出し、薬物残存率(%)とした。
実施例1において、脂環族飽和炭化水素樹脂をテルペン重合体にした以外は実施例1と全く同じ調製法を繰り返して、ナルフラフィン含有経皮吸収貼付剤2を得た。得られたナルフラフィン含有経皮吸収貼付剤2を試験例1に従って安定性試験を行った際の薬物残存率は、95%であった。結果を表2に示した。
実施例1において、脂環族飽和炭化水素樹脂を水素化ロジンエステルにした以外は実施例1と全く同じ調製法を繰り返して、経皮吸収貼付剤1を得た。得られた経皮吸収貼付剤1を試験例1に従って安定性試験を実施した際の薬物残存率は、36%であった。結果を表2に示した。
Claims (3)
- 粘着層中でナルフラフィンの分解を抑制できる経皮吸収貼付剤であって、粘着層に粘着基剤、粘着付与樹脂、薬物溶解剤およびナルフラフィンを含有し、粘着層の総重量に対して、粘着付与樹脂として脂環族飽和炭化水素樹脂またはテルペン重合体を5〜40重量%含有することを特徴とするナルフラフィン含有経皮吸収貼付剤。
- 粘着基剤がポリイソブチレンまたはスチレン−イソプレン−スチレンゴムである請求項1に記載のナルフラフィン含有経皮吸収貼付剤。
- 薬物溶解剤が炭酸プロピレンまたはクロタミトンである請求項1または2に記載のナルフラフィン含有経皮吸収貼付剤。
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