JP3552285B2 - Oral cholesterol lowering agent - Google Patents

Oral cholesterol lowering agent Download PDF

Info

Publication number
JP3552285B2
JP3552285B2 JP18016694A JP18016694A JP3552285B2 JP 3552285 B2 JP3552285 B2 JP 3552285B2 JP 18016694 A JP18016694 A JP 18016694A JP 18016694 A JP18016694 A JP 18016694A JP 3552285 B2 JP3552285 B2 JP 3552285B2
Authority
JP
Japan
Prior art keywords
lowering agent
weight
exchange resin
anion exchange
cholesterol
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP18016694A
Other languages
Japanese (ja)
Other versions
JPH0797330A (en
Inventor
達雄 野村
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Chemical Corp
Original Assignee
Mitsubishi Chemical Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Chemical Corp filed Critical Mitsubishi Chemical Corp
Priority to JP18016694A priority Critical patent/JP3552285B2/en
Publication of JPH0797330A publication Critical patent/JPH0797330A/en
Application granted granted Critical
Publication of JP3552285B2 publication Critical patent/JP3552285B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Landscapes

  • Medicinal Preparation (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Description

【0001】
【産業上の利用分野】
本発明は経口コレステロ−ル低下剤に関し、更に詳しくは、打錠成形性に優れ、加湿下でも安定で、且つ流動性に優れた、服用しやすい経口コレステロ−ル低下剤に関する。
【0002】
【従来の技術および発明が解決しようとする課題】
従来、陰イオン交換樹脂は1回の服用量が多いため、錠剤も大きくなり、服用性を考慮すると異形錠が好ましいとされている。しかし、異形錠の場合、円形錠と異なり打錠時、杵の一部に歪みが生じ杵が破損しやすい。従来行われている一定量の水分を含有させて打錠する方法(特開平2−286621号公報および特開平3−236326号公報)では、さらに大きな打錠圧が必要であり、素錠の製造法としては不十分であった。
【0003】
一方、陰イオン交換樹脂を活性成分とする錠剤のコ−ティングに関しては、コレスチラミン樹脂を用い無溶媒でポリエチレングリコ−ルの中にステアリン酸を加熱溶融しコ−ティングする方法(特開平3−236326号公報)が知られている。しかしこの方法でコ−ティングされた錠剤は、開放状態では保存安定性が悪く、室温下、数時間で錠剤が吸湿崩壊してしまい、包装を開封した後の安定性が極めて悪いという難点があった。さらに、コ−ティング膜の強度が弱く摩損度が大きいため、錠剤の包装工程や輸送中に破損が生じるという欠点もあった。現在市販されているコレスチラミンは用時懸濁用ドライシロップであり、取り扱いのしやすさ及び服用のしやすさからも、錠剤化が望まれているが、上記のような理由から望ましい錠剤は得られていなかった。
【0004】
また、本発明者らは、先に陰イオン交換樹脂に対しヒドロキシプロピルセルロ−スをコ−ティングする方法を見出だした(特願平4−320155号)。しかし、この方法でコ−ティングされた錠剤は、加湿下での安定性は向上したが、コ−ティング膜に使用しているヒドロキシプロピルセルロ−スが吸湿して粘性が増すため、錠剤同志が付着し流動性が損なわれるという欠点があった。
【0005】
【課題を解決するための手段】
本発明者らは、上記問題に鑑み、鋭意検討を重ねた結果、陰イオン交換樹脂を活性成分とし、一定量の水分および従来流動化剤として使用されている二酸化ケイ素を副成分として含ませることにより、著しい打錠成形性の向上がみられることを見出だした。さらに、通常使用するものよりも高粘度のヒドロキシプロピルメチルセルロ−スをコ−ティングに使用することにより、加湿下でも安定で、かつ、流動性が低下しない服用しやすい経口コレステロ−ル低下剤が得られることを見出だした。
【0006】
すなわち、本発明の要旨は、陰イオン交換樹脂に対し14〜20重量%の水および陰イオン交換樹脂に対し2重量%以下の二酸化ケイ素を含有し、陰イオン交換樹脂を活性成分として含有する素錠にヒドロキシプロピルメチルセルロースをコーティングしてなる経口コレステロ−ル低下剤および該経口コレステロール低下剤の素錠に10〜30cStのヒドロキシプロピルメチルセルロ−スの水溶液をコ−ティングして得られる経口コレステロ−ル低下剤に存する。
【0007】
さらに本発明の要旨は、下記工程からなる経口コレステロール低下剤の製造方法に存する。
工程1:陰イオン交換樹脂に、陰イオン交換樹脂に対し14〜20重量%の水を加え混合し、さらに陰イオン交換樹脂に対し2重量%以下の二酸化ケイ素を加え混合後打錠して素錠を得る。
【0008】
工程2:素錠に、10〜30cStのヒドロキシプロピルメチルセルロ−スの水溶液からなるコ−ティング液をコーティングする。
本発明において、活性成分として用いられる陰イオン交換樹脂としては、血中のコレステロ−ルを低下させるためにコレステロ−ル低下剤として使用されるものであれば特に限定されないが、特開昭60−209523号公報に記載の方法により得られる2−メチルイミダゾール−エピクロロヒドリン共重合体が特に好ましいものとして挙げられる。2−メチルイミダゾール−エピクロロヒドリン共重合体(以下、「MCI−196」と称することもある)は、不規則に入り乱れた複雑な立体構造を有するが、下記式(I)の基本構造で示され、また、その構造は部分的には下記式(II)で示される。
【0009】
【化1】

Figure 0003552285
【0010】
【化2】
Figure 0003552285
【0011】
これらの陰イオン交換樹脂に対し、14〜20重量%、好ましくは15〜19重量%の水を含むように水を加え混合する。このとき、水のほかにヒドロキシプロピルセルロ−ス等の結合液を加えてもよい。さらに陰イオン交換樹脂に対し、2重量%以下、好ましくは0.2〜1.0重量%の二酸化ケイ素を加え混合した後、スピ−ドミルで整粒する。これに、硬化油等の滑沢剤を加え、混合後打錠する。ここで、上記の水分が20%を越えると錠剤がスポンジ状になり好ましくない。また、二酸化ケイ素の量が2%を越えると打錠成形性が低下する。
【0012】
こうして製造された陰イオン交換樹脂を含む素錠に、10〜30cSt(センチスト−クス:日本薬局方に2%水溶液の20℃における粘度と定義されている)のヒドロキシプロピルメチルセルロ−ス(以下、「高粘度のヒドロキシプロピルメチルセルロ−ス」と称することもある。)を含むコ−ティング液を、ハイコ−タ−HCT−30(フロイント産業(株)製)等のコ−ティング装置を用いて、例えば、吸気温度80〜90℃、スプレ−速度5〜10g/分の条件でコ−ティングを行う。
【0013】
本発明においては、コ−ティング液の溶媒として水の使用が可能である。水溶媒のコ−ティングでは陰イオン交換樹脂に対し、水分が14%未満の素錠では、コ−ティング中に素錠が膨潤してスポンジ状になり、コ−ティング膜の破損が生じる。従って、水溶媒を使用したコ−ティングを行うためには、上記のように素錠は14%以上の水分を含む必要がある。
【0014】
本発明においては、コ−ティング液中に目的に応じ酸化チタン、タルク、低置換度ヒドロキシプロピルセルロ−ス、エチルセルロ−ス、色素等の固形成分を加えることも可能である。このとき、これらの固形成分の量を、ヒドロキシプロピルメチルセルロ−スに対し50重量%以下にするとコ−ティング膜の強度を高めることができる。固形成分の量が50%を越えると、湿度に対するコ−ティング錠の安定性が著しく低下する。
【0015】
コ−ティング液には、上記の高粘度のヒドロキシプロピルメチルセルロ−ス以外に、低粘度のヒドロキシプロピルメチルセルロ−ス、さらに、pH非依存性であり、かつ、水溶性であるヒドロキシプロピルセルロ−ス、メチルセルロ−ス等のセルロ−ス類を単独あるいは適宜組み合わせて使用することも可能である。
さらに、錠剤の崩壊時間の調整や防湿効果を上げるため、これらの水溶性のセルロ−ス類に、水不溶性であるエチルセルロ−スや少量のワックスを加えてもよい。
【0016】
ヒドロキシプロピルセルロ−スや低粘度のヒドロキプロピルメチルセルロ−ス等を高粘度のヒドロキプロピルメチルセルロ−スと組み合わせて使用する場合、それらを混合すると、コ−ティング膜の安定性が大きく低下する。従って、この場合は、まずヒドロキシプロピルセルロ−スや低粘度のヒドロキプロピルメチルセルロ−ス等からなるコ−ティング液を素錠にアンダ−コ−ティングし、その上に、高粘度のヒドロキプロピルメチルセルロ−スから成るコ−ティング液をオ−バ−コ−ティングすることにより、加湿下でも安定な錠剤を得ることができる。
【0017】
コ−ティング量は、高粘度のヒドロキシプロピルメチルセルロ−ス単独の場合、陰イオン交換樹脂を含む素錠に対し、1〜5重量%が好ましい。このようにして得られた本発明の経口コレステロール低下剤はコーティング層の厚さが約30μm〜約160μm、好ましくは約60〜約120μmである。なお、二重にコ−ティングする場合は、アンダ−コ−ティングが1〜4重量%、オ−バ−コ−ティングが0.5〜2重量%が好ましい。
【0018】
本発明の経口コレステロール低下剤は、錠剤、好ましくは異形錠の形態に成形される。
本発明の経口コレステロール低下剤の服用量は、成人1日量1〜10g、好ましくは1.5〜4gであり、1日1〜3回に分けて、食前、食後又は食間に服用する。
【0019】
【実施例】
以下、実施例によりさらに詳細に説明するが、本発明はその要旨を越えない限り以下に限定されるものではない。
(実施例1)
スピ−ドニ−ダ−(岡田精工(株)製)にMCI−196(水分5%)500gを入れ、5%ヒドロキシプロピルセルロ−ス水溶液58.7gを加え練合する。さらに攪拌しながら含水二酸化ケイ素2.38gを加え混合する。取り出し後、スピ−ドミル(岡田精工(株)製)で整粒する。これに硬化油1.9gを加え混合後打錠する。このようにして得られた素錠は、陰イオン交換樹脂に対し、17重量%の水分および0.5重量%の含水二酸化ケイ素を含む。
【0020】
得られた素錠に対し、ハイコ−タ−HCT−30(フロイント産業(株))を用いて、吸気温度80℃、スプレ−速度5g/分の条件で、コ−ティングを行い、経口コレステロ−ル低下剤を製造した。コ−ティング液は、下記に示した組成で、ヒドロキシプロピルメチルセルロ−ス(15cSt)を水に溶解後、酸化チタン、タルク、ポリエチレングリコ−ルを加え良く混合し、80メッシュ篩を通したのち、コ−ティングに供した。コ−ティング量は、素錠に対し、2.5重量%とした。コーティング層の厚さは約90μmであった。
【0021】
【表1】
Figure 0003552285
【0022】
(実施例2)
実施例1と同様にして得られた素錠に対し、下記に示した組成のアンダ−コ−ティングを行った後、次いで、下記に示した組成のオ−バ−コ−ティングを行って経口コレステロ−ル低下剤を製造した。コ−ティングは実施例1と同様の条件でハイコ−タ−HCT−30を用いて行った。コ−ティング量は、素錠に対し、アンダ−コ−ティングの場合は2.0重量%、オ−バ−コ−ティングの場合は1.5重量%とした。コーティング層の厚さは約110μmであった。
【0023】
【表2】
Figure 0003552285
【0024】
【表3】
Figure 0003552285
【0025】
(実施例3)
以下のような処方で素錠中の二酸化ケイ素の量を陰イオン交換樹脂(MCI−196)に対し0.1〜2.0重量%に変化させて、二酸化ケイ素の添加量と錠剤硬度との関係を調べた。錠剤硬度はモンサント硬度計を用い、打錠圧700kgで測定した。結果を図1に示す。二酸化ケイ素の量が2.0重量%以下の場合、より優れた打錠成形性が得られることがわかる。
【0026】
【表4】
Figure 0003552285
【0027】
(比較例1)
実施例1において、素錠中の5%ヒドロキシプロピルセルロ−ス水溶液の量を38.7gとした(得られた素錠は、陰イオン交換樹脂に対し、13重量%の水分を含む)以外は同様にして素錠を製造し、実施例1と同様な方法でコ−ティングを行ったが、コ−ティング中にコ−ティング膜が破損し、コ−ティング錠は得られなかった。
【0028】
(比較例2)
実施例1において、コ−ティング液の組成を以下のようにした(ヒドロキシプロピルメチルセルロースの代わりにヒドロキシプロピルセルロースを用いた)以外は同様にして経口コレステロ−ル低下剤を製造した。
【0029】
【表5】
Figure 0003552285
【0030】
(比較例3)
実施例1において、コーティング液の組成を以下のようにした(酸化チタン、タルクの固形成分量を55%とした)以外は同様にして経口コレステロール低下剤を製造した。
【0031】
【表6】
Figure 0003552285
【0032】
(試験例1)
実施例1及び2並びに比較例2及び3で得られた経口コレステロ−ル低下剤を用いて加湿条件下(40℃、湿度75%、瓶開放)における安定化試験を行った。以下の結果より本発明の経口コレステロ−ル低下剤は、加湿下でも安定で、かつ、流動性が低下しないことがわかる。
【0033】
【表7】
Figure 0003552285
【0034】
(実施例4)
実施例1で5%ヒドロキシプロピルセルロース水溶液58.7gを7.1%ヒドロキシプロピルセルロース水溶液60.0gに、コーティング量を2.5重量%から2.7重量%に変えた以外は同様にして得られた経口コレステロール低下剤(錠剤)、MCI−196(原体)およびMCI−196を後述の参考例に示す方法に従って顆粒に調製したもの(顆粒剤)の同等性を、ウサギ高コレステロール食モデルを用いて調べた。
【0035】
体重2.2〜3.2kgのNew Zealand White系雄ウサギ(10〜12週令)を1群5〜9匹として実験に供した。
予備飼育中、高コレステロール食(0.5%コレステロール含有ウサギ飼料(オリエンタル酵母(株)製)で5日間飼育し、高脂血症ウサギを得た。A群のウサギ5匹には引続き高コレステロール食および10ml生理食塩水を与え、B群のウサギ9匹には高コレステロール食および原体(投与量500mg/匹)を10ml生理食塩水に懸濁させたものを、C群のウサギ7匹には高コレステロール食および顆粒剤(投与量500mg/匹)を10ml生理食塩水に懸濁させたものを、D群のウサギ8匹には高コレステロール食、錠剤(投与量250mg×2錠/匹)および10ml生理食塩水を与えた。原体、顆粒剤および錠剤は1日1回強制経口投与を行った。
【0036】
高コレステロール食投与開始日、高コレステロール食および薬物投与開始日、投与から3日目、7日目および11日目の各々薬物投与3時間後にウサギの耳介静脈より採血し、遠心分離した血漿中の総コレステロール量を和光純薬社製コレステロールテストワコーキットを用いて定量した。結果を図2に示す。図中、○はA群の、●はB群の、△はC群の、■はD群の結果を表す。
【0037】
図2より、本願発明の経口コレステロール低下剤(錠剤)は、原体および顆粒剤による投与の場合と比較して同等の生物学的活性を有することがわかる。
(実施例5)胆汁酸吸着試験
実施例4と同様にして得られた本発明の経口コレステロール低下剤の錠剤(1g錠1錠および500mg錠2錠)並びに顆粒剤(1g)を37±0.5℃に保った6mMコール酸ナトリウム水溶液1000ml中に投入した後、経時的に液をサンプリングし、コール酸ナトリウム濃度を測定した。
【0038】
装置は日局の溶出試験法(第2法)を用い、回転数50rpmで行った。
なお、コール酸ナトリウム吸着率は、MCI−196原薬1gを60mMコール酸ナトリウム水溶液1000mlに投入し吸着した量を100%として算出した。
結果を図3に示す。図中、○は1g錠1錠、●は500mg錠2錠、□は1g顆粒状の結果を示す。これより、本発明の経口コレステロール低下剤(錠剤)は、胆汁酸吸着試験においても顆粒剤と同等の効果を示すことがわかる。
【0039】
(参考例)顆粒剤製造方法
MCI−196 10kgおよびヒドロキシプロピルセルロース1.20kgをバーチカルグラニュレータ(パウレック社製)に入れ混合する。さらにモノステアリン酸グリセリン530gをエタノールに加温溶解して混合後、押し出し造粒を行う。造粒物を乾燥した後、スピードミル(岡田精工社製)で整粒し、篩分を行う(12メッシュから42メッシュを素顆粒とする)。素顆粒8210gをスパイラフロー(フロイント社製)に仕込み、モノステアリン酸グリセリン750gおよびエチルセルロース187gをエタノールに加温度溶解した液でコーティングする。次いで、ヒドロキシプロピルセルロース47gをエタノールに溶解し、ラウリル硫酸ナトリウム19g、酸化チタン75gを懸濁させた液でコーティングする。
【0040】
コーティングした顆粒を篩分、12メッシュから42メッシュを採取する(12メッシュから42メッシュをコーティング顆粒とする)。コーティング顆粒に対し、0.5gのステアリン酸カルシウムを加え混合することにより顆粒剤を得る。
【0041】
【発明の効果】
本発明によれば、打錠成形性に優れ、加湿下でも安定で、且つ流動性に優れた、服用しやすい経口コレステロ−ル低下剤が得られる。
【図面の簡単な説明】
【図1】実施例3の二酸化ケイ素の添加量と錠剤硬度の関係を示す図である。
【図2】実施例4の本発明の経口コレステロール低下剤(錠剤)、原体、顆粒剤の生物学的活性を示す図である。
【図3】実施例5の本発明の経口コレステロール低下剤(錠剤)および顆粒剤の胆汁酸吸着試験結果を示す図である。[0001]
[Industrial applications]
The present invention relates to an oral cholesterol-lowering agent, and more particularly, to an oral cholesterol-lowering agent which has excellent tableting properties, is stable even under humidified conditions, has excellent fluidity, and is easy to take.
[0002]
2. Description of the Related Art
Conventionally, since the anion exchange resin has a large dose per dose, the size of the tablet is large, and it is considered that a deformed tablet is preferable in consideration of the ingestibility. However, in the case of a deformed tablet, unlike a round tablet, a part of the punch is distorted during tableting, and the punch is easily damaged. The conventional tableting method in which a certain amount of water is contained (JP-A-2-286621 and JP-A-3-236326) requires an even greater tableting pressure, and the production of uncoated tablets is required. The law was inadequate.
[0003]
On the other hand, regarding the coating of tablets containing an anion exchange resin as an active ingredient, a method of heating and melting stearic acid in polyethylene glycol without solvent using a cholestyramine resin (Japanese Unexamined Patent Publication No. Hei. No. 236326) is known. However, tablets coated by this method have the disadvantage that the storage stability is poor in the open state, the tablet disintegrates due to moisture absorption within several hours at room temperature, and the stability after opening the package is extremely poor. Was. Further, the coating film has a low strength and a high friability, so that there is a drawback that the tablet is broken during the packaging process and transportation. Cholestyramine currently on the market is a dry syrup for suspension at the time of use, and tableting is desired also from the viewpoint of ease of handling and taking, but desirable tablets are obtained for the reasons described above. Had not been.
[0004]
The present inventors have previously found a method of coating hydroxypropyl cellulose on an anion exchange resin (Japanese Patent Application No. 4-320155). However, the tablets coated by this method have improved stability under humidification, but because the hydroxypropyl cellulose used for the coating film absorbs moisture and increases the viscosity, the tablets are coated with each other. There is a drawback that it adheres and the fluidity is impaired.
[0005]
[Means for Solving the Problems]
In view of the above problems, the present inventors have made intensive studies and as a result, anion exchange resin as an active component, a certain amount of water and silicon dioxide, which has been conventionally used as a fluidizing agent, as an auxiliary component. As a result, it was found that a remarkable improvement in tableting moldability was observed. Furthermore, by using hydroxypropylmethylcellulose having a higher viscosity than that usually used for coating, an oral cholesterol-lowering agent which is stable even under humidification and which is easy to take without decreasing the fluidity can be obtained. It has been found that it can be obtained.
[0006]
That is, the gist of the present invention is to provide an element containing 14 to 20% by weight of water with respect to the anion exchange resin, 2% by weight or less of silicon dioxide with respect to the anion exchange resin, and containing the anion exchange resin as an active ingredient. Oral cholesterol-lowering agent obtained by coating tablets with hydroxypropylmethylcellulose and oral cholesterol obtained by coating an aqueous solution of 10-30 cSt of hydroxypropylmethylcellulose on uncoated tablets of said oral cholesterol-lowering agent. Exists in reducing agents.
[0007]
Further, the gist of the present invention resides in a method for producing an oral cholesterol-lowering agent comprising the following steps.
Step 1: 14 to 20% by weight of water is added to the anion exchange resin and mixed with the anion exchange resin, and silicon dioxide of 2% by weight or less is added to the anion exchange resin. Get the tablets.
[0008]
Step 2: An uncoated tablet is coated with a coating liquid consisting of an aqueous solution of hydroxypropylmethyl cellulose of 10 to 30 cSt.
In the present invention, the anion exchange resin used as an active ingredient is not particularly limited as long as it is used as a cholesterol-lowering agent for lowering cholesterol in blood. Particularly preferred is a 2-methylimidazole-epichlorohydrin copolymer obtained by the method described in JP-A-209523. The 2-methylimidazole-epichlorohydrin copolymer (hereinafter sometimes referred to as “MCI-196”) has an irregular and complicated steric structure, but has a basic structure represented by the following formula (I). And the structure is partially represented by the following formula (II).
[0009]
Embedded image
Figure 0003552285
[0010]
Embedded image
Figure 0003552285
[0011]
Water is added to and mixed with these anion exchange resins so as to contain 14 to 20% by weight, preferably 15 to 19% by weight of water. At this time, a binding solution such as hydroxypropyl cellulose may be added in addition to water. Further, 2% by weight or less, preferably 0.2 to 1.0% by weight of silicon dioxide is added to and mixed with the anion exchange resin, followed by sizing with a speed mill. A lubricant such as a hardened oil is added to the mixture, and the mixture is mixed and tableted. Here, if the above-mentioned water content exceeds 20%, the tablet becomes sponge-like, which is not preferable. On the other hand, when the amount of silicon dioxide exceeds 2%, the tableting moldability is reduced.
[0012]
The uncoated tablet containing the anion-exchange resin thus produced is treated with 10 to 30 cSt (centistox: defined as the viscosity of a 2% aqueous solution at 20 ° C. in the Japanese Pharmacopoeia) of hydroxypropyl methylcellulose (hereinafter, referred to as “the viscosity”). The coating solution containing "high-viscosity hydroxypropylmethylcellulose" is coated with a coating device such as Hicoater HCT-30 (manufactured by Freund Corporation). For example, coating is performed under the conditions of an intake air temperature of 80 to 90 ° C. and a spray rate of 5 to 10 g / min.
[0013]
In the present invention, water can be used as a solvent for the coating liquid. In the case of coating with an aqueous solvent, the uncoated tablet having a water content of less than 14% with respect to the anion exchange resin swells during the coating to form a sponge, and the coating film is damaged. Accordingly, in order to perform coating using a water solvent, the uncoated tablet needs to contain 14% or more of water as described above.
[0014]
In the present invention, solid components such as titanium oxide, talc, low-substituted hydroxypropylcellulose, ethylcellulose, and dyes can be added to the coating solution according to the purpose. At this time, if the amount of these solid components is set to 50% by weight or less based on hydroxypropyl methyl cellulose, the strength of the coating film can be increased. When the amount of the solid component exceeds 50%, the stability of the coated tablet against humidity is significantly reduced.
[0015]
In addition to the high-viscosity hydroxypropylmethylcellulose described above, the coating liquid may further include a low-viscosity hydroxypropylmethylcellulose, and a pH-independent and water-soluble hydroxypropylcellulose. And celluloses such as methylcellulose can be used alone or in appropriate combination.
Further, in order to adjust the disintegration time of the tablet and to increase the moisture-proof effect, water-insoluble ethyl cellulose and a small amount of wax may be added to these water-soluble celluloses.
[0016]
When hydroxypropylcellulose or low-viscosity hydroxypropylmethylcellulose is used in combination with high-viscosity hydroxypropylmethylcellulose, if they are mixed, the stability of the coating film is greatly reduced. Therefore, in this case, first, a coating liquid consisting of hydroxypropyl cellulose or low-viscosity hydroxypropylmethyl cellulose is undercoated on an uncoated tablet, and then a high-viscosity hydroxypropylmethyl By overcoating a coating solution composed of cellulose, stable tablets can be obtained even under humidified conditions.
[0017]
In the case of using high-viscosity hydroxypropylmethylcellulose alone, the coating amount is preferably 1 to 5% by weight based on the uncoated tablet containing an anion exchange resin. The oral cholesterol-lowering agent of the present invention thus obtained has a coating layer having a thickness of about 30 μm to about 160 μm, preferably about 60 to about 120 μm. In the case of double coating, the undercoating is preferably 1 to 4% by weight, and the overcoating is preferably 0.5 to 2% by weight.
[0018]
The oral cholesterol lowering agent of the present invention is formed into a tablet, preferably a shaped tablet.
The dose of the oral cholesterol-lowering agent of the present invention is 1 to 10 g, preferably 1.5 to 4 g per day for an adult. The dose is taken 1 to 3 times a day before, after or between meals.
[0019]
【Example】
Hereinafter, the present invention will be described in more detail with reference to Examples. However, the present invention is not limited to the following without departing from the gist thereof.
(Example 1)
500 g of MCI-196 (water content: 5%) is put into a speed kneader (manufactured by Okada Seiko Co., Ltd.), and 58.7 g of a 5% aqueous solution of hydroxypropyl cellulose is added and kneaded. While stirring, 2.38 g of hydrous silicon dioxide is added and mixed. After removal, the particles are sized by a speed mill (manufactured by Okada Seiko Co., Ltd.). 1.9 g of hardened oil is added to the mixture, and the mixture is mixed and tableted. The uncoated tablet thus obtained contains 17% by weight of water and 0.5% by weight of hydrous silicon dioxide with respect to the anion exchange resin.
[0020]
The obtained uncoated tablet was coated with Hicoater HCT-30 (Freund Sangyo Co., Ltd.) under the conditions of an intake temperature of 80 ° C. and a spray rate of 5 g / min to give oral cholesterol. A lubricating agent was prepared. The coating liquid had the composition shown below, and after dissolving hydroxypropyl methyl cellulose (15 cSt) in water, added titanium oxide, talc, and polyethylene glycol, mixed well, and passed through an 80 mesh sieve. And coating. The coating amount was 2.5% by weight based on the uncoated tablet. The thickness of the coating layer was about 90 μm.
[0021]
[Table 1]
Figure 0003552285
[0022]
(Example 2)
The uncoated tablet obtained in the same manner as in Example 1 was subjected to undercoating with the composition shown below, and then overcoated with the composition shown below to give oral tablets. A cholesterol lowering agent was prepared. Coating was performed using Hicoater HCT-30 under the same conditions as in Example 1. The coating amount was 2.0% by weight for the undercoating and 1.5% by weight for the overcoating based on the uncoated tablet. The thickness of the coating layer was about 110 μm.
[0023]
[Table 2]
Figure 0003552285
[0024]
[Table 3]
Figure 0003552285
[0025]
(Example 3)
By changing the amount of silicon dioxide in the uncoated tablet to 0.1 to 2.0% by weight based on the anion exchange resin (MCI-196) according to the following formulation, the amount of silicon dioxide added to the tablet hardness was changed. Investigated the relationship. Tablet hardness was measured using a Monsanto hardness meter at a tableting pressure of 700 kg. The results are shown in FIG. It can be seen that when the amount of silicon dioxide is 2.0% by weight or less, more excellent tableting formability can be obtained.
[0026]
[Table 4]
Figure 0003552285
[0027]
(Comparative Example 1)
In Example 1, the amount of the 5% aqueous solution of hydroxypropyl cellulose in the uncoated tablet was 38.7 g (the obtained uncoated tablet contained 13% by weight of water with respect to the anion exchange resin). An uncoated tablet was produced in the same manner and coated in the same manner as in Example 1. However, the coating film was broken during the coating, and no coated tablet was obtained.
[0028]
(Comparative Example 2)
An oral cholesterol-lowering agent was produced in the same manner as in Example 1, except that the composition of the coating solution was as follows (hydroxypropylcellulose was used instead of hydroxypropylmethylcellulose).
[0029]
[Table 5]
Figure 0003552285
[0030]
(Comparative Example 3)
An oral cholesterol lowering agent was produced in the same manner as in Example 1, except that the composition of the coating liquid was changed as follows (the solid components of titanium oxide and talc were set to 55%).
[0031]
[Table 6]
Figure 0003552285
[0032]
(Test Example 1)
Using the oral cholesterol-lowering agents obtained in Examples 1 and 2 and Comparative Examples 2 and 3, a stabilization test was performed under humidified conditions (40 ° C, 75% humidity, bottle open). The following results show that the oral cholesterol-lowering agent of the present invention is stable even under humidified conditions and does not decrease its fluidity.
[0033]
[Table 7]
Figure 0003552285
[0034]
(Example 4)
In Example 1, 58.7 g of 5% aqueous solution of hydroxypropylcellulose was obtained in the same manner as 60.0 g of 7.1% aqueous solution of hydroxypropylcellulose, except that the coating amount was changed from 2.5% by weight to 2.7% by weight. Of the oral cholesterol-lowering agent (tablet), MCI-196 (the drug substance), and MCI-196 prepared into granules (granules) according to the method described in Reference Example below, using a rabbit high cholesterol diet model. And examined.
[0035]
Male New Zealand White male rabbits (10 to 12 weeks of age) weighing 2.2 to 3.2 kg were subjected to the experiment in groups of 5 to 9 rabbits.
During preliminary breeding, the rats were bred for 5 days on a high cholesterol diet (0.5% cholesterol-containing rabbit feed (manufactured by Oriental Yeast Co., Ltd.)) to obtain hyperlipidemic rabbits. A diet and 10 ml of physiological saline were given, and 9 rabbits in group B were given a high cholesterol diet and the drug substance (500 mg / animal) suspended in 10 ml of physiological saline, and 7 rabbits in group C were given. Is a high cholesterol diet and granules (dose of 500 mg / animal) suspended in 10 ml of physiological saline. Eight rabbits in group D had a high cholesterol diet and tablets (dose of 250 mg × 2 tablets / animal). The drug substance, granules and tablets were administered by oral gavage once a day.
[0036]
On the first day of administration of a high cholesterol diet, the first day of administration of a high cholesterol diet and a drug, and on the third, seventh and eleventh days after administration, blood was collected from the auricular vein of rabbits 3 hours after administration of the drug and centrifuged. Was determined using a cholesterol test Wako kit manufactured by Wako Pure Chemical Industries, Ltd. FIG. 2 shows the results. In the figure, ○ represents the results of Group A, ● represents the results of Group B, Δ represents the results of Group C, and Δ represents the results of Group D.
[0037]
FIG. 2 shows that the oral cholesterol-lowering agent (tablet) of the present invention has the same biological activity as that in the case of administration of the drug substance and granules.
(Example 5) Bile acid adsorption test Tablets (1 g tablet and 2 500 mg tablets) and granules (1 g) of the oral cholesterol-lowering agent of the present invention obtained in the same manner as in Example 4 were added to 37 ± 0. After pouring into 1000 ml of a 6 mM sodium cholate aqueous solution maintained at 5 ° C., the solution was sampled with time to measure the sodium cholate concentration.
[0038]
The apparatus was used at a rotation speed of 50 rpm using the dissolution test method (second method) of the Japanese Pharmacopoeia.
The sodium cholate adsorption rate was calculated assuming that the amount of 1 g of the MCI-196 drug substance added to 1000 ml of a 60 mM sodium cholate aqueous solution and adsorbed was 100%.
The results are shown in FIG. In the figure, ○ indicates one tablet of 1 g tablet, ● indicates two tablets of 500 mg tablet, and □ indicates the result of 1 g tablet. This indicates that the oral cholesterol-lowering agent (tablet) of the present invention exhibits the same effect as the granule in the bile acid adsorption test.
[0039]
(Reference example) Granule production method 10 kg of MCI-196 and 1.20 kg of hydroxypropylcellulose are mixed in a vertical granulator (manufactured by Powrex). Further, 530 g of glycerin monostearate is dissolved in ethanol by heating and mixed, and then extrusion granulation is performed. After drying the granulated product, the granulated product is sized using a speed mill (manufactured by Okada Seiko Co., Ltd.) and sieved (from 12 mesh to 42 mesh as elementary granules). 8210 g of the elementary granules are charged in a spiral flow (manufactured by Freund), and coated with a solution prepared by dissolving 750 g of glyceryl monostearate and 187 g of ethyl cellulose in ethanol while heating. Next, 47 g of hydroxypropyl cellulose is dissolved in ethanol, and coated with a liquid in which 19 g of sodium lauryl sulfate and 75 g of titanium oxide are suspended.
[0040]
The coated granules are sieved and 42 to 12 meshes are collected (12 to 42 meshes are coated granules). Granules are obtained by adding 0.5 g of calcium stearate to the coated granules and mixing.
[0041]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, the oral cholesterol lowering agent which is excellent in tableting formability, is stable even under humidification, and excellent in fluidity, and is easy to take is obtained.
[Brief description of the drawings]
FIG. 1 is a graph showing the relationship between the amount of silicon dioxide added and tablet hardness in Example 3.
FIG. 2 is a diagram showing the biological activity of the oral cholesterol-lowering agent (tablet), drug substance, and granule of the present invention in Example 4.
FIG. 3 shows the results of bile acid adsorption test of the oral cholesterol-lowering agent (tablet) and granules of the present invention of Example 5;

Claims (9)

陰イオン交換樹脂に対し14〜20重量%の水および陰イオン交換樹脂に対し2重量%以下の二酸化ケイ素を含有し、陰イオン交換樹脂を活性成分として含有する素錠にヒドロキシプロピルメチルセルロースをコーティングしてなる経口コレステロ−ル低下剤。An uncoated tablet containing 14 to 20% by weight of water with respect to the anion exchange resin and 2% by weight or less of silicon dioxide with respect to the anion exchange resin and containing the anion exchange resin as an active ingredient is coated with hydroxypropyl methylcellulose. Oral cholesterol lowering agent. 陰イオン交換樹脂が2−メチルイミダゾール−エピクロロヒドリン共重合体であることを特徴とする請求項1記載の経口コレステロール低下剤。The oral cholesterol-lowering agent according to claim 1, wherein the anion exchange resin is a 2-methylimidazole-epichlorohydrin copolymer. コーティング層の厚さが30μm〜160μmであることを特徴とする請求項1または2記載の経口コレステロール低下剤。The oral cholesterol-lowering agent according to claim 1 or 2, wherein the thickness of the coating layer is 30 µm to 160 µm. 異形錠であることを特徴とする請求項1〜3のいずれかに記載の経口コレステロール低下剤。The oral cholesterol-lowering agent according to any one of claims 1 to 3, which is a modified tablet. 10〜30cStのヒドロキシプロピルメチルセルロ−スの水溶液をコ−ティングして得られる請求項1記載の経口コレステロ−ル低下剤。The oral cholesterol-lowering agent according to claim 1, which is obtained by coating an aqueous solution of hydroxypropyl methyl cellulose of 10 to 30 cSt. ヒドロキシプロピルメチルセルロースの水溶液が50重量%以下の固形成分を含むことを特徴とする請求項5記載の経口コレステロール低下剤。The oral cholesterol-lowering agent according to claim 5, wherein the aqueous solution of hydroxypropylmethylcellulose contains 50% by weight or less of a solid component. 下記工程から成る経口コレステロール低下剤の製造方法。
工程1:陰イオン交換樹脂に、陰イオン交換樹脂に対し14〜20重量%の水を加え混合し、さらに陰イオン交換樹脂に対し2重量%以下の二酸化ケイ素を加え混合後打錠して素錠を得る。
工程2:素錠に、10〜30cStのヒドロキシプロピルメチルセルロ−スの水溶液からなるコ−ティング液をコーティングする。
A method for producing an oral cholesterol-lowering agent comprising the following steps.
Step 1: 14 to 20% by weight of water is added to the anion exchange resin and mixed with the anion exchange resin. Further, 2% by weight or less of silicon dioxide is added to the anion exchange resin and mixed. Get the tablets.
Step 2: An uncoated tablet is coated with a coating solution consisting of an aqueous solution of hydroxypropylmethyl cellulose of 10 to 30 cSt.
コ−ティング液の重量が素錠に対し1〜5重量%であることを特徴とする請求項7記載の経口コレステロ−ル低下剤の製造方法。The method for producing an oral cholesterol-lowering agent according to claim 7, wherein the weight of the coating liquid is 1 to 5% by weight based on the uncoated tablet. コ−ティング液がヒドロキシプロピルメチルセルロースに対し50重量%以下の固形成分を含むことを特徴とする請求項7または8記載の経口コレステロ−ル低下剤の製造方法。The method for producing an oral cholesterol-lowering agent according to claim 7 or 8, wherein the coating liquid contains 50% by weight or less of a solid component based on hydroxypropylmethylcellulose.
JP18016694A 1993-08-03 1994-08-01 Oral cholesterol lowering agent Expired - Lifetime JP3552285B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18016694A JP3552285B2 (en) 1993-08-03 1994-08-01 Oral cholesterol lowering agent

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP19239293 1993-08-03
JP5-192392 1993-08-03
JP18016694A JP3552285B2 (en) 1993-08-03 1994-08-01 Oral cholesterol lowering agent

Publications (2)

Publication Number Publication Date
JPH0797330A JPH0797330A (en) 1995-04-11
JP3552285B2 true JP3552285B2 (en) 2004-08-11

Family

ID=26499793

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18016694A Expired - Lifetime JP3552285B2 (en) 1993-08-03 1994-08-01 Oral cholesterol lowering agent

Country Status (1)

Country Link
JP (1) JP3552285B2 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW438608B (en) * 1995-08-02 2001-06-07 Hisamitsu Pharmaceutical Co A tablet containing anion exchange resin
JP4010585B2 (en) 1996-10-15 2007-11-21 久光製薬株式会社 Tablets containing anion exchange resin
JP3410738B2 (en) 1997-03-05 2003-05-26 科学技術振興事業団 Pharmaceutical carrier consisting of microglia
WO2000037055A1 (en) * 1998-12-18 2000-06-29 Abbott Laboratories Controlled release formulation of divalproex sodium
EP2050456A4 (en) * 2006-08-09 2013-01-23 Mitsubishi Tanabe Pharma Corp Tablet
JP5819800B2 (en) * 2012-10-31 2015-11-24 信越化学工業株式会社 Coating liquid in which high-viscosity hypromellose is dispersed and method for producing solid preparation

Also Published As

Publication number Publication date
JPH0797330A (en) 1995-04-11

Similar Documents

Publication Publication Date Title
KR100322340B1 (en) Oral cholesterol lowering agents
KR100283709B1 (en) Stable Sustained Release Oral Dosage Composition
TW577757B (en) Immediate release tablet cores of insoluble drugs having sustained-release coating
JPH0669965B2 (en) Solid sustained release pharmaceutical formulation
BRPI0714586A2 (en) Metropolol prolonged release pharmaceutical formulation and process for its preparation
US20240156761A1 (en) Magnesium Threonate Compositions and Uses Thereof
JPS62501845A (en) controlled release potassium chloride
HUE031251T2 (en) Controlled release oral dosage form comprising oxycodone
EP3236963B1 (en) Method of treatment
JP3552285B2 (en) Oral cholesterol lowering agent
US8460702B2 (en) Pharmaceutical compositions
DE69733752T2 (en) DRUGS CONTAINING OXAPROCINE SODIUM SALT, CALIUM SALT, OR TRIS (HYDROXYMETHYL) AMINOMETHANE SALT
US5158776A (en) Solid oral dosage forms of ifosfamide
CN113456607B (en) Sacubitril valsartan sodium monolayer osmotic pump controlled release tablet and preparation method thereof
RU2411035C2 (en) Modified release 6-methyl-2-ethyl-hydroxypyridine succinate dosage form
JP2010001242A (en) Rebamipide solid preparation, and method for producing the same
JP3883505B2 (en) Oral granules
WO2003043610A2 (en) A process for manufacture of a sustained release composition containing microbe
JP2006257068A (en) High content terbinafine hydrochloride tablet and method for producing the same
WO2002060448A1 (en) Medicinal composition
CN112057429A (en) Controlled release pharmaceutical compositions of rasinades
CZ146494A3 (en) Ipsapirone healing preparation
JP4696210B2 (en) Sustained-release tablets containing isosorbide-5-mononitrate as an active ingredient and method for producing the same
JP4438043B2 (en) Pharmaceutical composition with suppressed decrease in dissolution rate over time
JPS61152629A (en) Slow acting theophylline drug and manufacture

Legal Events

Date Code Title Description
TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20040426

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20040426

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

S531 Written request for registration of change of domicile

Free format text: JAPANESE INTERMEDIATE CODE: R313531

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20080514

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20090514

Year of fee payment: 5

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20100514

Year of fee payment: 6

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20100514

Year of fee payment: 6

S531 Written request for registration of change of domicile

Free format text: JAPANESE INTERMEDIATE CODE: R313531

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20100514

Year of fee payment: 6

R371 Transfer withdrawn

Free format text: JAPANESE INTERMEDIATE CODE: R371

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20100514

Year of fee payment: 6

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110514

Year of fee payment: 7

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120514

Year of fee payment: 8

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120514

Year of fee payment: 8

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130514

Year of fee payment: 9

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130514

Year of fee payment: 9

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140514

Year of fee payment: 10

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

EXPY Cancellation because of completion of term