TWI491690B - 含有聯苯乙酸之經皮吸收製劑 - Google Patents
含有聯苯乙酸之經皮吸收製劑 Download PDFInfo
- Publication number
- TWI491690B TWI491690B TW099143614A TW99143614A TWI491690B TW I491690 B TWI491690 B TW I491690B TW 099143614 A TW099143614 A TW 099143614A TW 99143614 A TW99143614 A TW 99143614A TW I491690 B TWI491690 B TW I491690B
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- Taiwan
- Prior art keywords
- biphenylacetic acid
- acid
- patch
- biphenylacetic
- transdermal absorption
- Prior art date
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- 229920001187 thermosetting polymer Polymers 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
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- PLSARIKBYIPYPF-UHFFFAOYSA-H trimagnesium dicitrate Chemical compound [Mg+2].[Mg+2].[Mg+2].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O.[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O PLSARIKBYIPYPF-UHFFFAOYSA-H 0.000 description 1
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- A61K31/19—Carboxylic acids, e.g. valproic acid
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Description
本發明係關於經皮吸收製劑,具體而言,係關於含有作為藥效成分的非類固醇系消炎鎮痛劑聯苯乙酸,並含有為局部麻醉劑且作為對於聯苯乙酸之吸收促進劑的木卡因或藥學上可被容許的鹽類而成的貼劑。
非類固醇系消炎鎮痛劑之聯苯乙酸,為芬布芬(Fenbufen)的活性代謝物,為顯示強力消炎鎮痛作用的藥物。聯苯乙酸為了避免全身性的副作用,係利用經皮投予,就外用製劑而言,有凝膠劑、液劑、泥罨(pap)劑、硬膏劑等在市面販售。
聯苯乙酸本身由於對於各種溶劑的溶解性極低,因此自以往,在該等的外用製劑中為提高聯苯乙酸的經皮吸收性,一直使用各種的助溶劑。
例如,於發明專利文獻1中,揭示一種含有對於聯苯乙酸之溶解能力高的克羅米通(crotamiton)作為必要成分的含有聯苯乙酸的硬膏劑。此外,於發明專利文獻2提出:摻配有作為助溶劑的N-甲基-2-吡咯啶酮及聚乙二醇的硬膏劑。但是,該等助溶劑中,也有許多對於皮膚會展現刺激性,而且當該等液狀成分摻配於貼劑時,有時會觀察到由於滲到貼劑表面(滲出到表面)造成貼劑隨時間物性改變。
此外,發明專利文獻3中,揭示不使用克羅米通而含有苯乙烯-異戊二烯-苯乙烯嵌段共聚物、松香系樹脂、塑化劑、1-薄荷醇、及聯苯乙酸之硬膏劑。該硬膏劑,係使聯苯乙酸以成熔融狀態者與成微細結晶狀態者共存的半熔融狀態,均勻分散在黏著劑層而成的貼劑,但是由於一部分聯苯乙酸以結晶狀態存在,因此,關於藥物的透過性並不十分理想。
此外,也有人探討兼具非類固醇系消炎鎮痛劑之抗發炎作用及局部麻醉劑之鎮痛作用的非類固醇消炎鎮痛劑與局部麻醉劑的摻配劑。
例如,發明專利文獻4及發明專利文獻5中,揭示摻配有吲哚美辛(Indometacin)、聯苯乙酸、雙氯芬酸鈉(Diclofenac sodium)、及洛索洛芬鈉(Loxoprofen sodium)等非類固醇系消炎鎮痛劑,與木卡因、苯坐卡因(benzocaine)、及待布卡因(dibucaine)等局部麻醉劑的泥罨劑,此外,於發明專利文獻6及發明專利文獻7中,分別揭示摻配有非類固醇系消炎鎮痛劑與局部麻醉劑的貼布劑。
但是,一般而言,局部麻醉劑多為鹼性的藥物,另一方面,一起摻配的非類固醇系消炎鎮痛劑,包含吲哚美辛或可多普洛菲等等多為酸性藥物,因此,當該等兩藥物同時摻配於貼劑中時,兩者會形成鹽,結果互相抑制藥物釋放性,無法得到期望的藥效。
專利文獻1 日本特開平第4-321624號公報
專利文獻2 日本特開第2001-342130號公報
專利文獻3 日本特開第2003-286162號公報
專利文獻4 日本特開第2002-128699號公報
專利文獻5 國際公開第WO 01/047559號
專利文獻6 日本特開第2005-145931號公報
專利文獻7 日本特開第2005-145932號公報
因此,吾所欲為開發一種經皮吸收製劑,在摻配有非類固醇系消炎鎮痛劑及作為局部麻醉劑的經皮吸收促進劑的貼劑中,可不抑制彼此的藥物釋放性,發揮高度消炎鎮痛效果。
本案發明人等,於該現狀下,努力研究藉由在非類固醇系消炎鎮痛劑當中摻配就聯苯乙酸而言作為經皮吸收促進劑的局部麻醉劑,開發不抑制彼此的藥物釋放性而發揮高度消炎鎮痛效果的經皮吸收製劑。
其結果發現:當吸收促進劑選擇木卡因,且與非類固醇系消炎鎮痛劑的聯苯乙酸一起摻配於貼劑基劑時,即使實質上不摻配聯苯乙酸的助溶劑,也可得到均勻的含有藥物的膏體,可得到顯示高度主要藥物成分釋放性的含有聯苯乙酸之經皮吸收製劑,同時無損於作為局部麻醉劑的木卡因的經皮吸收性,可成為兼具優異鎮痛、抗發炎作用的經皮吸收製劑,因此達成本發明。
因此,本發明之第一課題是提供解決上述習知的問題的一種含有聯苯乙酸之經皮吸收製劑,在最終製劑中實質上不含聯苯乙酸的助溶劑,而顯示聯苯乙酸的高釋放性。
此外,本發明的第二課題是提供一種貼劑,摻配有局部麻醉劑與非類固醇系消炎鎮痛劑聯苯乙酸,能無損於局部麻醉劑之釋放性而顯示優異的非類固醇系消炎鎮痛劑的釋放性。
解決該課題之本發明,其基本態樣為一種含有聯苯乙酸之經皮吸收貼劑,其特徵為含有作為有效成分之聯苯乙酸及作為吸收促進劑之木卡因或其藥學上可被容許的鹽而成。
更具體而言,本發明係一種含有聯苯乙酸之經皮吸收貼劑,聯苯乙酸之含量相對於含有藥物之膏體總重量為0.1至10重量%,木卡因或其藥學上可被容許的鹽的含量相對於含有藥物的膏體總重量為0.01至20重量%。
其中,本發明之含有聯苯乙酸之經皮吸收貼劑中,貼劑基劑為橡膠系高分子,該橡膠系高分子為苯乙烯-異戊二烯-苯乙烯嵌段共聚物。
此外,本發明由其他觀點觀之,如上述各含有聯苯乙酸之經皮吸收製劑,特徵為其中於最終製劑中實質上不含聯苯乙酸之助溶劑。
依照本發明可提供一種含有聯苯乙酸之經皮吸收貼劑,其特徵為含有作為消炎鎮痛劑成分之聯苯乙酸及作為吸收促進劑之木卡因或其藥學上可被容許的鹽而成。
特別是本發明提供一種經皮吸收製劑,於貼劑基劑中,藉由組合作為對於聯苯乙酸之吸收促進劑的木卡因或其藥學上可被容許的鹽,即使實質上不摻配聯苯乙酸的助溶劑,也能使聯苯乙酸均勻含有在膏體組成物中,可發揮聯苯乙酸的高釋放性,同時不會使作為局部麻醉劑的木卡因的經皮吸收性降低,可發揮優異的鎮痛、抗發炎效果。
由後述試驗例的結果也能解明,該木卡因的摻配所得到的吸收促進效果,消炎鎮痛劑當中對於聯苯乙酸為專一的,因此於能提供臨床上極有用的含有聯苯乙酸的經皮吸收製劑貼劑的觀點,本發明在醫療上有重大效果。
本發明如上述,其基本的態樣為一種含有聯苯乙酸之經皮吸收貼劑,其特徵為含有作為消炎鎮痛藥效成分的聯苯乙酸及作為吸收促進劑的木卡因或其在藥學上可被容許的鹽而成。
本發明之貼劑中,為有效成分的聯苯乙酸的摻配量相對於含有藥物的膏體總重量為0.1至10重量%,尤其為0.2至5重量%較佳。
聯苯乙酸之摻配量,若低於0.1重量%,有時無法充分得到聯苯乙酸的藥效,此外,若摻配超過10重量%,會產生皮膚刺激或損害膏體的物性,因此為不佳。
另一方面,本發明中,與聯苯乙酸一起摻配的木卡因,其本身作為局部麻醉劑顯示鎮痛作用,除此以外,在本發明中係作用為對於聯苯乙酸之吸收促進劑。
此情形中的木卡因的摻配量相對於含有藥物的膏體總重量摻配0.01至20重量%較佳,更佳為0.1至10重量%。
摻配量若低於0.01重量%,無法使聯苯乙酸的皮膚透過性充分提高,反之,即使摻配超過20重量%,不僅無法期待木卡因的摻配效果,有時反而會產生皮膚刺激或損害膏體的物性,並不佳。
本發明中,藉由將聯苯乙酸與木卡因一起摻配於貼劑基劑,得到於最終製劑中實質不含聯苯乙酸的助溶劑的含有聯苯乙酸之經皮吸收貼劑,也是另一特徵。
本發明中,「實質上不含助溶劑」,係指在目的製劑的製造步驟中,雖然在製劑中無可避免地殘留微量使用的溶劑,但是只要是不影響最終製劑的經皮吸收性的程度,則不含助溶劑。
亦即,其殘留溶劑只要是不影響最終製劑中的藥物釋放性的程度的量,可視為「實質上不含助溶劑」。
可用於本發明提供之貼劑的膏體組成物,可藉由將聯苯乙酸、及木卡因與貼劑基劑成分混合而製備。
該貼劑基劑成分只要是可成為膏體組成物黏著劑層的基劑者即可,並無特殊限制,但較佳為使用橡膠系高分子、丙烯酸系高分子、及矽系高分子等疏水性高分子。
就橡膠系高分子而言,例如苯乙烯-異戊二烯-苯乙烯嵌段共聚物(以下稱為SIS)、聚異丁烯(以下稱為PIB)、苯乙烯-丁二烯-苯乙烯嵌段共聚物(以下稱為SBS)、苯乙烯-丁二烯橡膠(以下稱為SBR)、異戊二烯橡膠等,其中尤以SIS較佳。
此外,就丙烯酸系高分子而言,只要是含有至少一種以丙烯酸2-乙基己酯、丙烯酸甲酯、丙烯酸丁酯、丙烯酸羥基乙酯、甲基丙烯酸2-乙基己酯等為代表之(甲基)丙烯酸酸衍生物而共聚合成者即並無特殊限制,可使用例如醫藥品添加物辭典2007(日本醫藥品添加劑協會編輯)中收錄為黏著劑的丙烯酸‧丙烯酸辛酯共聚物、丙烯酸2-乙基己酯‧乙烯基吡咯啶酮共聚物溶液、丙烯酸酯-乙酸乙烯酯共聚物、丙烯酸2-乙基己酯-甲基丙烯酸2-乙基己酯‧甲基丙烯酸十二酯共聚物、丙烯酸甲酯-丙烯酸2-乙基己酯共聚合樹脂乳劑、丙烯酸樹脂烷醇胺液中含有的丙烯酸系高分子等黏著劑、DURO-TAK丙烯酸系黏著劑系列(National Starch and Chemical Company公司製)、Eudragit系列(Higuchi商會)等。
此外,矽系高分子之具體例,例如聚有機矽氧烷等矽酮橡膠。
也可將如此的疏水性高分子2種以上混合使用,該等高分子依據組成全體的質量的摻配量,考慮黏著劑層的形成及充分的藥物透過性,為5至80重量%,較佳為10至70重量%,更佳為10至50重量%。
本發明提供之為經皮吸收製劑的貼劑中,黏著劑組成物中也可含有塑化劑。可使用的塑化劑,例如:石油系油(例如液體石蠟等石蠟系加工油、環烷烴系加工油、芳香族系加工油等)、角鯊烷、角鯊烯、植物系油(例如橄欖油、山茶油、浮油(tall oil)、花生油、篦麻子油等)、矽酮油、二元酸酯(例如鄰苯二甲酸二丁酯、鄰苯二甲酸二辛酯等)、液狀橡膠(例如聚丁烯、液狀異戊二烯橡膠等)、液狀脂肪酸酯類(例如肉豆蔻酸異丙酯、月桂酸己酯、癸二酸二乙酯、癸二酸二異丙酯等)等。尤其液體石蠟較佳。
也可將該等成分2種以上混合使用,如此的塑化劑依據黏著劑層組成全體的摻配量,考慮作為貼劑的充分凝集力的維持,合計為1至70重量%,較佳為10至60重量%,更佳為10至50重量%。
本發明之黏著劑層中,為調整製劑的黏著力,吾所欲為摻配黏著賦予樹脂。可使用的黏著賦予樹脂,例如:松香衍生物(例如松香、松香甘油酯、氫化松香、氫化松香甘油酯、松香新戊四醇酯等)、脂環族飽和烴樹脂(例如Arcon P100、荒川化學工業)、脂肪族系烴樹脂(例如Quintone B170、日本Zeon公司(Zeon Corporation))、萜烯樹脂(例如Clearon P-125、Yasuhara化學公司)、馬來酸樹脂等。
如此的黏著賦予樹脂依據黏著劑組成物的組成全體的摻配量,考慮作為貼附製劑的充分黏著力及剝離時對於皮膚的刺激性,可為5至70重量%,較佳為5至60重量%,更佳為10至50重量%。
此外,視需要可使用抗氧化劑、填充劑、交聯劑、防腐劑、紫外線吸收劑,抗氧化劑吾所欲為使用生育酚及該等的酯衍生物、抗壞血酸、抗壞血酸硬脂酸酯、降二氫癒創木酸(nordihydroguaiaretic acid)、二丁基羥基甲苯(以下稱為BHT)、丁基羥基苯甲醚等。
填充劑宜為使用碳酸鈣、碳酸鎂、矽酸鹽(例如矽酸鋁、矽酸鎂等)、矽酸、硫酸鋇、硫酸鈣、鋅酸鈣、氧化鋅、氧化鈦等。
交聯劑宜為使用胺基樹脂、苯酚樹脂、環氧樹脂、醇酸樹脂、不飽和聚酯等熱硬化性樹脂、異氰酸酯化合物、封端型(blocked)異氰酸酯化合物、有機系交聯劑、金屬或金屬化合物等無機系交聯劑。
防腐劑宜為使用對羥基苯甲酸乙酯、對羥基苯甲酸丙酯、對羥基苯甲酸丁酯等對羥基苯甲酸酯。
紫外線吸收劑宜為使用對胺基苯甲酸衍生物、鄰胺苯甲酸(anthranilic acid)衍生物、水楊酸衍生物、胺基酸系化合物、二噁烷衍生物、香豆素衍生物、咪唑啉衍生物、嘧啶衍生物等。
如此的抗氧化劑、填充劑、交聯劑、防腐劑、紫外線吸收劑,依據製劑的黏著劑層的組成全體的質量,可摻配10重量%以下,較佳為5重量%以下,更佳為2重量%以下。
具有如上述組成的本發明的係經皮吸收製劑的貼劑,可利用任一方法製造。
一般而言,例如有稱為熱熔法的方法,亦即,使含有藥物的基劑成分熱熔解,塗佈在剝離膜或支撐體後,與支撐體或剝離膜貼合而獲得本劑,或一般稱為溶劑法的方法,亦即,將含有藥物的基劑成分溶解於甲苯、己烷、乙酸乙酯及N-甲基-2-吡咯啶酮等有機溶劑,在剝離膜或支撐體上延展並塗佈,將溶劑乾燥除去後,與支撐體或剝離膜貼合而獲得本劑。
本發明提供的為外用經皮製劑的貼劑中,黏著劑層的厚度並無特殊限制,通常為500μm以下,較佳為20至300μm。
本發明之為經皮吸收製劑的貼劑之支撐體,可使用伸縮性或非伸縮性支撐體。例如可從布、不織布、聚胺基甲酸酯、聚酯、聚乙酸乙烯酯、聚偏氯乙烯、聚乙烯、聚對苯二甲酸乙二酯(在下文中,簡稱PET)、鋁片等,或此等的複合素材中選擇。
此外,剝離膜只要是保護黏著劑層且主要藥物成分不變質直到經皮吸收製劑貼劑適用在皮膚為止,且以能輕易剝離的方式進行聚矽氧塗覆者即可,並無特殊限制,其具體例例如將聚乙烯膜、PET膜或聚丙烯膜進行聚矽氧塗覆者。
在下文中,呈現本發明的實施例、製劑例及試驗例而更具體說明本發明,但本發明不限定於該等實施例、製劑例,在不脫離本發明的技術思想的範圍內可進行各種改變。
此外,以下記載中,%若無特別指明,則全部代表重量%。
製備摻配有聯苯乙酸與木卡因兩者的外用貼劑。
預先使聯苯乙酸溶解於N-甲基-2-吡咯啶酮,將木卡因溶解於甲苯,與已溶於甲苯的其餘的基劑成分混合。將混合物塗佈在剝離膜上後,將甲苯及N-甲基-2-吡咯啶酮乾燥除去,與PET膜支撐體貼合,獲得吾所欲之經皮吸收製劑(黏著層厚度為100μm)。
製備僅摻配聯苯乙酸的外用貼劑作為比較例1。
預先將聯苯乙酸溶解於N-甲基-2-吡咯啶酮後,與已溶解於甲苯的其餘的基劑成分混合。將混合物塗佈在剝離膜上後,將甲苯及N-甲基-2-吡咯啶酮乾燥除去,與PET膜支撐體貼合,獲得吾所欲之經皮吸收製劑(黏著層厚度100μm)。
製備僅摻配木卡因的外用貼劑作為比較例2。
預先將木卡因溶解於甲苯後,與已溶解於甲苯的其餘的基劑成分混合。將混合物塗佈在剝離膜上後,將甲苯乾燥除去,並與PET膜支撐體貼合,獲得吾所欲之經皮吸收製劑(黏著層厚度為100μm)。
製備僅摻配為另一消炎鎮痛劑的可多普洛菲的外用貼劑作為比較例3。
預先將可多普洛菲溶解於N-甲基-2-吡咯啶酮後,與已溶解於甲苯的其餘的基劑成分混合。將混合物塗佈在剝離膜上後,將甲苯、及N-甲基-2-吡咯啶酮乾燥除去,與PET膜支撐體貼合,獲得吾所欲之經皮吸收製劑(黏著層厚度為100μm)。
製備使用為另一消炎鎮痛劑的可多普洛菲,並倂用木卡因的外用貼劑作為比較例4。
預先使可多普洛菲溶解於N-甲基-2-吡咯啶酮,並使木卡因溶解於甲苯,與已溶解於甲苯的其餘的基劑成分混合。將混合物塗佈在剝離膜上後,將甲苯、及N-甲基-2-吡咯啶酮乾燥除去,與PET膜支撐體貼合,獲得吾所欲之經皮吸收製劑(黏著層厚度為100μm)。
製備僅摻配為另一消炎鎮痛劑的吲哚美辛的外用貼劑作為比較例5。
預先使吲哚美辛溶解於N-甲基-2-吡咯啶酮後,與已溶解於甲苯的其餘的基劑成分混合。將混合物塗佈在剝離膜上後,將甲苯、及N-甲基-2-吡咯啶酮乾燥除去,與PET膜支撐體貼合,獲得吾所欲之經皮吸收製劑(黏著層厚度為100μm)。
製備使用為另一消炎鎮痛劑的吲哚美辛,且倂用木卡因的外用貼劑作為比較例6。
預先使吲哚美辛溶解於N-甲基-2-吡咯啶酮,並使木卡因溶解於甲苯,與已溶解於甲苯的其餘的基劑成分混合。將混合物塗佈於剝離膜上後,將甲苯及N-甲基-2-吡咯啶酮乾燥除去,與PET膜支撐體貼合,獲得吾所欲之經皮吸收製劑(黏著層厚度為100μm)。
針對上述實施例1、及比較例1至6製備的外用貼劑,使用雄性大鼠(Wistar系、8週大)的摘除皮膚,進行體外皮膚透過性試驗,利用以下比較探討(1)至(3),驗證本發明之摻配有聯苯乙酸及木卡因兩者的外用貼劑中,聯苯乙酸及木卡因的釋放性的專一性。
將大鼠的腹部皮膚剝離,以真皮側作為接收體層側,將其內側以磷酸緩衝生理食鹽水充滿,使37℃的溫水回流於水夾套。將實施例1及比較例1至6製備的各製劑打孔成圓形(1.77 cm2
),貼附摘除皮膚,隨時間進行取樣接收體液,以高速液體層析法測定各藥物(木卡因、聯苯乙酸、可多普洛菲,及吲哚美辛)的透過量。
(1)利用本發明之摻配有聯苯乙酸及木卡因兩者的外用貼劑的實施例1的製劑、僅摻配聯苯乙酸的比較例1的製劑、僅摻配木卡因的比較例2的製劑的比較,進行聯苯乙酸及/或木卡因的釋放性的比較。
(2)就另一消炎鎮痛劑可多普洛菲,利用僅摻配可多普洛菲的比較例3的製劑、摻配有可多普洛菲及木卡因兩者之比較例4之製劑、僅摻配木卡因的比較例2的比較,進行可多普洛菲及/或木卡因的釋放性的比較。
(3)就另一消炎鎮痛劑吲哚美辛,利用僅摻配吲哚美辛之比較例5的製劑、摻配有吲哚美辛及木卡因兩者之比較例6之製劑、僅摻配木卡因的比較例2的比較,進行吲哚美辛及/或木卡因的釋放性的比較。
結果如第1圖至第6圖所示。
對於比較探討(1)的討論
由第1圖及第2圖所示結果的比較可知,摻配有聯苯乙酸與木卡因兩者的實施例1的外用貼劑,比起僅摻配聯苯乙酸的比較例1的外用貼劑,聯苯乙酸的釋放性明顯較高(第1圖)。
此外,摻配有聯苯乙酸與木卡因兩者的實施例1的外用貼劑,比起僅摻配木卡因的製劑的比較例2的外用貼劑,呈現大致同等的木卡因釋放性(第2圖)。
考量該兩個結果可理解:本發明的摻配有聯苯乙酸與木卡因兩者的外用貼劑,由於作為吸收促進劑的木卡因的良好釋放性,聯苯乙酸的釋放性也提高。
對於比較探討(2)的討論
另一方面,當將同樣的試驗對於為另一消炎鎮痛劑的可多普洛菲,探討有無摻配木卡因所得的兩製劑的釋放性時,解明:就木卡因雖顯示大致同等的藥物釋放性(第4圖),但是,就可多普洛菲的釋放性,由於摻配木卡因而受到明顯抑制(第3圖)。
對於比較探討(3)的討論
此外,於為其他消炎鎮痛劑的吲哚美辛的情形,摻配有吲哚美辛與木卡因兩者的比較例6的外用貼劑,吲哚美辛及木卡因的釋放性均受抑制。
由該等比較探討(1)至(3)的結果觀之,同時摻配作為局部麻醉劑的木卡因與非類固醇系消炎鎮痛劑聯苯乙酸的本發明的貼劑,儘管係為鹼性藥物的局部麻醉劑與為酸性藥物的非類固醇系消炎鎮痛劑的摻配製劑,但木卡因的釋放性未受抑制,而是伴隨其釋放性,顯示非常優異的聯苯乙酸的釋放性的經皮吸收製劑。
此外,藉由摻配該木卡因而獲得的有效成分消炎鎮痛劑的釋放效果,在非類固醇系消炎鎮痛劑當中,於可多普洛菲或吲哚美辛未觀察到,僅對於聯苯乙酸有專一性,可理解本發明的極優異的專一性。
在下文中,表1顯示上述實施例1之本發明之外用貼劑以外的具體製劑例。惟,本發明不限定於該等。
黏著層的厚度:100μm
如以上記載,本發明提供的經皮吸收製劑,可顯示來自木卡因的優異的鎮痛效果及來自聯苯乙酸的優異的消炎鎮痛效果。
特別是本發明藉由在貼劑基劑中,將作為對於聯苯乙酸的吸收促進劑的木卡因組合聯苯乙酸,即使實質上不摻配聯苯乙酸的助溶劑,也能使聯苯乙酸均勻含有在膏體組成物中,此外,能無損於木卡因的釋放性且維持聯苯乙酸的高釋放性,其結果,能提供發揮優異的消炎鎮痛效果的經皮吸收製劑,於醫療上具有重大效果。
第1圖顯示依據試驗例1的比較探討(1),關於聯苯乙酸的體外大鼠皮膚透過性試驗的結果。
第2圖顯示依據試驗例1的比較探討(1),關於木卡因的體外大鼠皮膚透過性試驗的結果。
第3圖顯示依據試驗例1的比較探討(2),關於比較例的可多普洛菲的體外大鼠皮膚透過性試驗的結果。
第4圖顯示依據試驗例1的比較探討(2),關於木卡因的體外大鼠皮膚透過性試驗的結果。
第5圖顯示依據試驗例1的比較探討(3),關於比較例的吲哚美辛的體外大鼠皮膚透過性試驗的結果。
第6圖顯示依據試驗例1之比較探討(3),關於木卡因之體外大鼠皮膚透過性試驗的結果。
Claims (8)
- 一種含有聯苯乙酸之經皮吸收貼劑,其特徵為含有聯苯乙酸作為有效成分,並含有木卡因或其在藥學上可被容許的鹽作為吸收促進劑。
- 如申請專利範圍第1項之含有聯苯乙酸之經皮吸收貼劑,其中聯苯乙酸的含量相對於含有藥物的膏體總重量為0.1至10重量%。
- 如申請專利範圍第1項之含有聯苯乙酸之經皮吸收貼劑,其中木卡因或其在藥學上可被容許的鹽的含量相對於含有藥物的膏體總重量為0.01至20重量%。
- 如申請專利範圍第1至3項中任一項之含有聯苯乙酸之經皮吸收貼劑,其中貼劑基劑為橡膠系高分子。
- 如申請專利範圍第4項之含有聯苯乙酸之經皮吸收貼劑,其中橡膠系高分子為苯乙烯-異戊二烯-苯乙烯嵌段共聚物。
- 如申請專利範圍第1至3項中任一項之含有聯苯乙酸之經皮吸收貼劑,其在最終製劑中是實質上不含聯苯乙酸的助溶劑。
- 如申請專利範圍第4項之含有聯苯乙酸之經皮吸收貼劑,其在最終製劑中是實質上不含聯苯乙酸的助溶劑。
- 如申請專利範圍第5項之含有聯苯乙酸之經皮吸收貼劑,其在最終製劑中是實質上不含聯苯乙酸的助溶劑。
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