JP2013514349A - 共加工された錠用賦形剤混合物、その調製及び使用 - Google Patents
共加工された錠用賦形剤混合物、その調製及び使用 Download PDFInfo
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Abstract
【選択図】なし
Description
本発明は、共加工された錠用賦形剤混合物、その調製及び錠剤化における使用に関する。
製薬業界では、活性のある薬剤成分(以下、"API"又は"APIs")を送達するために最も一般的に用いられている手段は錠剤であり、そのような錠剤は適切に調合された粉末を圧縮することで得られる。通常の圧縮可能な混合物は、典型的には、APIと適切な賦形剤材料とを配合して得る。これらの賦形剤は、希釈剤又は充填剤/担体、結合剤又は接着剤、崩壊剤、滑剤又は流動促進剤、着色剤、香料、及び、それらの混合物を含んでいても良い。滑剤とは、打錠機中への流動性を改善するために粉末に加えられる物質のことである。
発明者らは、共加工された賦形剤混合物の錠剤化において、少なくとも充填剤−結合剤及び崩壊剤との均一混合物として潤滑剤を使用することへの偏見を克服し、潤滑剤は金型に直接接触する必要が無いことを見出した。結合及び崩壊の観点で疑われている潤滑剤の有害作用は、潤滑剤が実際の造粒において共加工された賦形剤混合物では容易にコントロールされ得ることがわかった。この発見は、造粒をする際、賦形剤の成分に潤滑剤を噴霧することを不必要とさせる。有利なことに、潤滑剤の代わりに、当業者は、流動層技術において、ラクトースの溶液を他の成分に吹き付けることを選ぶことも出来、従って、外側にラクトースを有している顆粒を製造することが出来る。ラクトースの優れた水溶解特性及び密度によって、外側におけるその存在は、結合と流動性とに良好に寄与し、さらには崩壊を促進し、結果、滑剤の必要性を、少なくとも大いに、賦形剤混合物のおおよそ0.25%未満の水準まで削減する。
この発明は、少なくとも一つの潤滑剤、一つ又は複数の充填剤−結合剤、及び、一つ又は複数の崩壊剤を含む顆粒を含み、前記顆粒は(好ましくは少なくとも部分的に)ラクトースで被覆され、前記ラクトースは好ましくは結晶質の形態であって、好ましくは一水和物及び/又は無水物の形態である共加工された賦形剤混合物に関する。
ラクトースで被覆された顆粒表面は、被覆材料の結晶の性質に起因して、より多くの表面が圧縮に関与するならば、“粗い”と表現してもよい。顆粒は、例えば別個の島として、少なくとも部分的に被覆されていることが好ましい。言い換えると、添付したSEMの写真に示されているように、被覆又は被覆層は、開口しているか(有孔の)又は閉じたような外観又は構造を有していてもよい。一態様において、ラクトースは連続的な被覆層を形成している。
例1.共加工された賦形剤混合物の製造
共加工された賦形剤混合物を、Pharmatose(登録商標)200M(DFE製ラクトース、充填剤−結合剤)261g、Pharmacel101(登録商標)(DFE製MCCタイプの充填剤−結合剤)180g、Primojel(登録商標)(DFE製崩壊剤)30g、及び、ステアリン酸マグネシウム(Fagron製潤滑剤)3gを流動層凝集機(Agglomaster AGM-2-PJSD、 Hosokawa、Japan)に加え、この混合物を、水140mlに溶かしたラクトース126gで凝集させることによって製造した。液状の充填剤−結合剤を、この粉体床に、10分間にわたって添加し、その後、10分間乾燥させる。その後、その結果として得られた共加工された賦形剤を、材料の密度を高めるべく、10バールの圧力で予備圧縮する。なお、予備圧縮は、遥かに高い圧力で行われる実際の錠剤化圧縮工程と混同されるべきではなく、当業者には公知である。
共加工された賦形剤混合物の錠剤機能に対して混合時間が及ぼす影響を調べるために、例1に係る500gの共加工された賦形剤の5つのバッチを、Turbula T2C(WAB、Switzerland)において、1分、3分、10分、30分、及び100分混合した。それぞれの場合において、混合された賦形剤混合物は、次に、ロータリフィードフレーム付きロータリプレスRotab-T(Luxner、Berlin、Germany)において、10kNの力で、9mm、250mgの錠剤へ圧縮した。これらの錠剤は、崩壊時間と錠剤の衝突強度とを調べるのに先立ち、翌日まで放置して緩和させた。
本発明のプロセスの影響を示すために、走査型電子顕微鏡(SEM)を用いて写真を複数撮影した。図4A乃至Cは、物理的に混合された試料(A)と共加工された賦形剤(B)とを比較するものである。図4Cは、図4Bの共加工された賦形剤を拡大したものである。
Claims (8)
- 錠剤化に適した共加工された賦形剤混合物であって、前記混合物は、複数の顆粒を含み、前記複数の顆粒は、共に造粒に供された、少なくとも一つの充填剤−結合剤、少なくとも一つの崩壊剤、及び少なくとも一つの潤滑剤を含み、前記複数の顆粒は少なくとも部分的にラクトースで被覆されている賦形剤混合物。
- 請求項1に記載の共加工された賦形剤混合物であって、造粒する間に、ラクトース溶液を、前記少なくとも一つの充填剤−結合剤、前記少なくとも一つの崩壊剤、及び、前記少なくとも一つの潤滑剤に吹き付ける流動層造粒法によって得られる賦形剤混合物。
- 請求項1又は2に記載の共加工された賦形剤混合物であって、ラクトース、微結晶性セルロース(MCC)、及び、架橋グリコール酸澱粉ナトリウム(SSG)を含む共加工された賦形剤混合物。
- 請求項1乃至3のいずれか1項に記載の共加工された賦形剤混合物であって、平均粒子サイズが0.500mmより小さい、粗い又は不規則な形をした複数の顆粒を含む共加工された賦形剤混合物。
- 請求項1乃至4のいずれか1項に記載の共加工された賦形剤混合物であって、前記混合物の全乾燥重量を基準にして、ラクトースを40乃至70%、MCCを20乃至50%、架橋グリコール酸澱粉ナトリウムを1乃至10%、及び、潤滑剤を0.2乃至1%含む共加工された賦形剤混合物。
- 請求項1乃至5のいずれか1項に記載の共加工された賦形剤混合物を含む袋又はドラム。
- 共加工された賦形剤混合物の調製方法であって、少なくとも一つの充填剤−結合剤、少なくとも一つの崩壊剤、及び、少なくとも一つの潤滑剤を含む混合物を提供することと;流動層造粒機において前記混合物を造粒することとを含み、ラクトースを含む溶液を、少なくとも一つの充填剤−結合剤及び少なくとも一つの崩壊剤を含む流動層に噴霧する調製方法。
- 請求項1乃至5のいずれか1項に記載の共加工された賦形剤混合物を、活性薬剤成分と混合して、活性薬剤成分混合物を形成するすることと、前記活性薬剤成分混合物を錠剤化することとを含む錠剤化方法。
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