JP2004352633A - Magnesium oxide tablet - Google Patents

Magnesium oxide tablet Download PDF

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Publication number
JP2004352633A
JP2004352633A JP2003150920A JP2003150920A JP2004352633A JP 2004352633 A JP2004352633 A JP 2004352633A JP 2003150920 A JP2003150920 A JP 2003150920A JP 2003150920 A JP2003150920 A JP 2003150920A JP 2004352633 A JP2004352633 A JP 2004352633A
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JP
Japan
Prior art keywords
magnesium oxide
polyvinyl alcohol
tablet
tableting
magnesium
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JP2003150920A
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Japanese (ja)
Inventor
Yuichiro Kano
祐一郎 狩野
Hiroshi Tanami
浩 田並
Hiroaki Kuga
宏彰 久我
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Kowa Co Ltd
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Kowa Co Ltd
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Priority to JP2003150920A priority Critical patent/JP2004352633A/en
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  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a magnesium oxide tablet composition causing neither darkening in appearance nor sticking during production. <P>SOLUTION: The magnesium oxide table comprises magnesium oxide, a polyvinyl alcohol and magnesium stearate. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
本発明は、外観に黒ずみが生じないと同時に、製造時の杵付着を起こさない酸化マグネシウム錠剤に関する。詳細には、酸化マグネシウム、ポリビニルアルコール及びステアリン酸マグネシウムを含有する酸化マグネシウム錠剤に関する。
【0002】
【従来の技術】
酸化マグネシウムは、一般に、胃・十二指腸潰瘍、胃炎(急・慢性胃炎、薬剤性胃炎等) 、上部消化管機能異常(神経性食思不振、いわゆる胃下垂症、胃酸過多症等) 、便秘症等の諸症状の緩和を行うため、安全性・有効性の確立した制酸剤及び瀉下剤の有効成分として汎用されている。これらの酸化マグネシウム製剤の投与形態としては、粉末状、細粒状のものが主として提供されているが、これらは服用時の口腔不快感が問題となるため、服用性に優れる剤型、すなわち錠剤での開発が望まれている。しかしながら、酸化マグネシウムを錠剤化する場合、圧縮成形すると打錠機との摩擦による錠剤表面の黒ずみや、杵との付着による打錠斑が生じ商品価値が低下するため、改善が求められていた。
外観に黒ずみを生じない酸化マグネシウム錠剤の処方としては、例えば、粒状の酸化マグネシウム、賦形剤及びタルク並びにステアリン酸マグネシウム又はステアリン酸カルシウムを含有する混合末を圧縮成形することにより、黒ずみがない酸化マグネシウム錠剤を得る処方が開示されている(特許文献1参照)。しかしながら、製造時の杵付着や杵の摩耗等の問題を生じるだけでなく、粒状の酸化マグネシウムを使用しなければならないし、タルクを多量に配合しなければならないことにより打錠時における錠剤の重量バラツキが大きいなどの多くの問題が有り、必ずしも満足のいくものではない。
【0003】
【特許文献1】特開2000−1428号公報
【0004】
【発明が解決しようとする課題】
従って、本発明の目的は、外観に黒ずみを生じることがないと同時に、製造時の杵付着を起こさず、汎用性に優れた商品価値の高い酸化マグネシウム錠剤を提供することにある。
【0005】
【課題を解決するための手段】
本発明者等は、斯かる実情に鑑み、酸化マグネシウム錠剤の処方について鋭意検討した結果、酸化マグネシウムにポリビニルアルコール及びステアリン酸マグネシウムを配合すれば、外観に黒ずみを生じることがなく、杵付着を起こさない酸化マグネシウム錠剤が得られることを見出し、本発明を完成した。
すなわち本発明は、酸化マグネシウム、ポリビニルアルコール及びステアリン酸マグネシウムを含有する酸化マグネシウム錠剤、及びその製造方法を提供するものである。
【0006】
【発明の実施の形態】
本発明で用いる酸化マグネシウムとしては、粒状のものでも粉末状のものであってもよく、例えば、日本薬局方酸化マグネシウム(富田製薬社製等)等の市販品が挙げられる。酸化マグネシウムの配合量は、製剤全量に対して50〜95重量%が好ましく、60〜90重量%がより好ましく、70〜85重量%が特に好ましい。
【0007】
本発明で用いるポリビニルアルコールとしては、医薬製剤に使用できるものであればよく、好ましくはポリ酢酸ビニルをけん化して得た重合物である。ポリビニルアルコールのけん化度は78〜100モル%が好ましく、82〜96モル%がより好ましく、87〜89モル%が特に好ましい。本発明におけるポリビニルアルコールとしては、ポリ酢酸ビニルの完全けん化物、又は部分けん化物が挙げられ、部分けん化物が特に好ましい。本発明で用いるポリビニルアルコールの具体例としては、例えばクラレポバールPVA−217S(クラレ社製)等の市販品が挙げられる。ポリビニルアルコールの配合量は、製剤全量に対して0.5〜10重量%が好ましく、1〜7重量%がより好ましく、2〜5重量%が特に好ましい。
【0008】
本発明で用いるステアリン酸マグネシウムとしては、医薬製剤に使用できるものであればよく、例えば、日本薬局方ステアリン酸マグネシウム(太平化学社製等)等の市販品が挙げられる。ステアリン酸マグネシウムの配合量は、製剤全量に対して0.1〜5重量%が好ましく、0.3〜4重量%がより好ましく、0.5〜3.5重量%が特に好ましい。
【0009】
本発明の酸化マグネシウム錠剤の製造方法としては、通常の錠剤の製造方法により行うことができる。好ましい製造例としては、エタノール、イソプロパノール等のアルコールを用いて、酸化マグネシウム、ポリビニルアルコール、ステアリン酸マグネシウム及び製薬上許容できる添加物を均一に練合して顆粒化し、打錠機で圧縮成形して錠剤化する方法が挙げられるが、これに限定されものではない。
【0010】
本発明の酸化マグネシウム錠剤は、前記した成分の他に製薬上許容できる各種の添加物をさらに配合することができる。好ましい添加物としては、賦形剤、崩壊剤、結合剤等を例示できる。
賦形剤としては、デンプン類、結晶セルロース、マンニトール、軽質無水ケイ酸、硬化油等が挙げられる。崩壊剤としては、カルメロース、カルメロースカルシウム、クロスカルメロースナトリウム、クロスポピドン、トウモロコシ澱粉、低置換度ヒドロキシプロピルセルロース等が挙げられる。結合剤としては、ゼラチン、アルファー化デンプン、プルラン等が挙げられる。
【0011】
【実施例】
以下、実施例により本発明をより具体的に説明するが、本発明はこれら実施例により何ら限定されるものではない。
【0012】
実施例1
酸化マグネシウム(富田製薬社製、商品名:日本薬局方酸化マグネシウム)480g、カルメロースカルシウム24g、結晶セルロース88.8g、ステアリン酸マグネシウム(太平化学社製、商品名:日本薬局方ステアリン酸マグネシウム)7.2g、ポリビニルアルコール(クラレ社製、商品名:クラレポバールPVA−217S)24gを加えて混合し、エタノール360gを加えて練合後、乾燥、整粒し打錠用顆粒とした。この打錠用顆粒を打錠機で圧縮成形して1錠260mgの素錠を製造した。
【0013】
実施例2
酸化マグネシウム480g、カルメロースカルシウム24g、結晶セルロース91.2g、ステアリン酸マグネシウム4.8g、ポリビニルアルコール24gを加えて混合し、エタノール360gを加えて練合後、乾燥、整粒し打錠用顆粒とした。この打錠用顆粒を打錠機で圧縮成形して1錠260mgの素錠を製造した。
【0014】
実施例3
酸化マグネシウム480g、カルメロースカルシウム24g、結晶セルロース81.6g、ステアリン酸マグネシウム14.4g、ポリビニルアルコール24gを加えて混合し、エタノール360gを加えて練合後、乾燥、整粒し打錠用顆粒とした。この打錠用顆粒を打錠機で圧縮成形して1錠260mgの素錠を製造した。
【0015】
実施例4
酸化マグネシウム480g、カルメロースカルシウム24g、結晶セルロース76.8g、ステアリン酸マグネシウム19.2g、ポリビニルアルコール24gを加えて混合し、エタノール360gを加えて練合後、乾燥、整粒し打錠用顆粒とした。この打錠用顆粒を打錠機で圧縮成形して1錠260mgの素錠を製造した。
【0016】
比較例1
実施例1に記載の成分からステアリン酸マグネシウムのみを除いて、同様に製造した。
【0017】
比較例2
実施例1に記載の成分からポリビニルアルコールのみを除いて、同様に製造した。
【0018】
試験例1
実施例1〜4及び比較例1、2について、杵付着及び錠剤の外観を検討した。錠剤の外観の評価は目視で行い、黒ずみのない錠剤を○で、黒ずみが生じた錠剤を×で示した。杵付着の評価は、打錠機で圧縮成形を開始してから5分後に杵付着が生じなかった結果を○で、杵付着が生じた結果を×で示した。その結果を次の表1に示す。
【0019】
【表1】

Figure 2004352633
【0020】
表1より、酸化マグネシウムにステアリン酸マグネシウムを配合せずポリビニルアルコールだけを配合した比較例1は、錠剤に黒ずみを認めると共に製造時の杵付着が生じることが判明した。また、酸化マグネシウムにポリビニルアルコールを配合せず、ステアリン酸マグネシウムだけを配合した比較例2は錠剤に黒ずみを認めなかったが、製造時の杵付着が生じることが判明した。一方、酸化マグネシウムにポリビニルアルコール及びステアリン酸マグネシウムを配合した酸化マグネシウム錠剤(実施例1〜4)は黒ずみを認めず、なおかつ、製造時の杵付着は認められなかった。
【0021】
製造例1
酸化マグネシウム2000g、カルメロースカルシウム100g、結晶セルロース370g、ステアリン酸マグネシウム30g、ポリビニルアルコール100gを、高速攪拌造粒機(ハイスピードミキサー:深江工業社製)にて混合し、エタノール1500gを加え練合後、乾燥(真空乾燥機SDM−30:佐々エンジニアリング社製)、整粒(ニュースピードミルND−10:岡田精工社製)し、打錠用顆粒とした。得られた打錠用顆粒をロータリー式打錠機(コレクト19TU:菊水製作所社製)でφ8.5mmの杵を用いて圧縮成形して、1錠260mgの錠剤を製造した。
【0022】
製造例2
酸化マグネシウム2000g、センノシドAB80g 、低置換度ヒドロキシプロピルセルロース100g、結晶セルロース340g、ステアリン酸マグネシウム30g、ポリビニルアルコール100gを、高速攪拌造粒機(ハイスピードミキサー:深江工業社製)にて混合し、エタノール1600gを加え練合後、乾燥(フローコーター:フロイント社製)、整粒(ニュースピードミルND−10:岡田精工社製)し、打錠用顆粒とした。得られた打錠用顆粒をロータリー式打錠機(コレクト19TU:菊水製作所社製)でφ8.5mmの杵を用いて圧縮成形して、1錠265mgの錠剤を製造した。
【0023】
【発明の効果】
本発明によれば、外観に黒ずみを生じることがないと同時に、製造時の杵付着を起こさない酸化マグネシウム錠剤を得ることができる。本発明の酸化マグネシウム錠剤は、外観も美しく、かつ製造時の杵付着を起こさないので、商品価値が高く外観の一定した酸化マグネシウム錠剤を大量に生産することが可能となる。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a magnesium oxide tablet that does not cause darkening in appearance and does not cause sticking of punches during production. In particular, it relates to a magnesium oxide tablet containing magnesium oxide, polyvinyl alcohol and magnesium stearate.
[0002]
[Prior art]
Magnesium oxide is generally used for gastric / duodenal ulcer, gastritis (sudden / chronic gastritis, drug-induced gastritis, etc.), upper gastrointestinal dysfunction (nervous anorexia, so-called hypopituitarism, hyperacidity, etc.), constipation, etc. In order to alleviate various symptoms, it is widely used as an active ingredient of antacids and laxatives with established safety and efficacy. As the administration form of these magnesium oxide preparations, powders and fine granules are mainly provided.However, since they cause problems of oral discomfort at the time of administration, dosage forms excellent in ingestibility, that is, tablets are used. The development of is desired. However, when magnesium oxide is formed into tablets, compression molding causes darkening of the tablet surface due to friction with a tableting machine and tableting unevenness due to adhesion with a punch, resulting in a reduction in commercial value.
Examples of the formulation of a magnesium oxide tablet that does not cause darkening in appearance include, for example, magnesium oxide having no darkening by compression-molding a mixed powder containing granular magnesium oxide, an excipient and talc and magnesium stearate or calcium stearate. A formulation for obtaining a tablet is disclosed (see Patent Document 1). However, in addition to problems such as sticking of a punch and abrasion of a punch during manufacturing, the use of granular magnesium oxide is required, and a large amount of talc must be blended. There are many problems such as large variations, and it is not always satisfactory.
[0003]
[Patent Document 1] Japanese Patent Application Laid-Open No. 2000-1428
[Problems to be solved by the invention]
Accordingly, an object of the present invention is to provide a magnesium oxide tablet which does not cause darkening in appearance, does not cause sticking of punches at the time of production, and has excellent versatility and high commercial value.
[0005]
[Means for Solving the Problems]
In view of such circumstances, the present inventors have conducted intensive studies on the formulation of magnesium oxide tablets.As a result, if polyvinyl alcohol and magnesium stearate were added to magnesium oxide, the appearance would not be darkened, and punch sticking would occur. It has been found that magnesium oxide tablets can be obtained, and the present invention has been completed.
That is, the present invention provides a magnesium oxide tablet containing magnesium oxide, polyvinyl alcohol and magnesium stearate, and a method for producing the same.
[0006]
BEST MODE FOR CARRYING OUT THE INVENTION
The magnesium oxide used in the present invention may be granular or powdery, and examples thereof include commercially available products such as magnesium oxide of the Japanese Pharmacopoeia (manufactured by Tomita Pharmaceutical Co., Ltd.). The compounding amount of magnesium oxide is preferably from 50 to 95% by weight, more preferably from 60 to 90% by weight, and particularly preferably from 70 to 85% by weight based on the total amount of the preparation.
[0007]
The polyvinyl alcohol used in the present invention may be any one that can be used for pharmaceutical preparations, and is preferably a polymer obtained by saponifying polyvinyl acetate. The saponification degree of polyvinyl alcohol is preferably 78 to 100 mol%, more preferably 82 to 96 mol%, and particularly preferably 87 to 89 mol%. Examples of the polyvinyl alcohol in the present invention include completely saponified polyvinyl acetate or partially saponified polyvinyl acetate, and a partially saponified polyvinyl acetate is particularly preferable. Specific examples of the polyvinyl alcohol used in the present invention include commercially available products such as Kuraray Povar PVA-217S (manufactured by Kuraray Co., Ltd.). The blending amount of polyvinyl alcohol is preferably 0.5 to 10% by weight, more preferably 1 to 7% by weight, and particularly preferably 2 to 5% by weight based on the total amount of the preparation.
[0008]
The magnesium stearate used in the present invention is not particularly limited as long as it can be used for pharmaceutical preparations, and examples thereof include commercially available products such as magnesium stearate of the Japanese Pharmacopoeia (eg, manufactured by Taihei Chemical Co., Ltd.). The compounding amount of magnesium stearate is preferably from 0.1 to 5% by weight, more preferably from 0.3 to 4% by weight, particularly preferably from 0.5 to 3.5% by weight based on the total amount of the preparation.
[0009]
The method for producing the magnesium oxide tablet of the present invention can be carried out by a usual tablet production method. As a preferred production example, ethanol, alcohol such as isopropanol, magnesium oxide, polyvinyl alcohol, magnesium stearate and pharmaceutically acceptable additives are uniformly kneaded and granulated, and compression-molded with a tableting machine. Examples of the method include tableting, but are not limited thereto.
[0010]
The magnesium oxide tablet of the present invention may further contain various pharmaceutically acceptable additives in addition to the components described above. Preferred additives include excipients, disintegrants, binders and the like.
Excipients include starches, crystalline cellulose, mannitol, light anhydrous silicic acid, hydrogenated oil and the like. Disintegrators include carmellose, carmellose calcium, croscarmellose sodium, crospovidone, corn starch, low-substituted hydroxypropylcellulose and the like. Binders include gelatin, pregelatinized starch, pullulan and the like.
[0011]
【Example】
Hereinafter, the present invention will be described more specifically with reference to examples, but the present invention is not limited to these examples.
[0012]
Example 1
480 g of magnesium oxide (manufactured by Tomita Pharmaceutical Co., Ltd., trade name: magnesium oxide of Japanese Pharmacopoeia), 24 g of carmellose calcium, 88.8 g of crystalline cellulose, magnesium stearate (manufactured by Taihei Chemical Co., trade name: magnesium stearate of Japanese Pharmacopoeia) 7 .2 g and 24 g of polyvinyl alcohol (Kuraray Co., Ltd., trade name: Kuraray Poval PVA-217S) were added and mixed. After 360 g of ethanol was added and kneaded, the mixture was dried and sized to obtain granules for tableting. The granules for tableting were compression-molded with a tableting machine to produce plain tablets of 260 mg per tablet.
[0013]
Example 2
480 g of magnesium oxide, 24 g of carmellose calcium, 91.2 g of crystalline cellulose, 4.8 g of magnesium stearate, and 24 g of polyvinyl alcohol were added and mixed, and after adding 360 g of ethanol and kneading, dried, sized and granulated for tableting. did. The granules for tableting were compression-molded with a tableting machine to produce plain tablets of 260 mg per tablet.
[0014]
Example 3
480 g of magnesium oxide, 24 g of carmellose calcium, 81.6 g of crystalline cellulose, 14.4 g of magnesium stearate, and 24 g of polyvinyl alcohol were added and mixed. After 360 g of ethanol was added and kneaded, the mixture was dried and sized to obtain granules for tableting. did. The granules for tableting were compression-molded with a tableting machine to produce plain tablets of 260 mg per tablet.
[0015]
Example 4
480 g of magnesium oxide, 24 g of carmellose calcium, 76.8 g of crystalline cellulose, 19.2 g of magnesium stearate, and 24 g of polyvinyl alcohol were added and mixed, and after adding 360 g of ethanol, kneading, drying, sizing and granulation for tableting were performed. did. The granules for tableting were compression-molded with a tableting machine to produce plain tablets of 260 mg per tablet.
[0016]
Comparative Example 1
The same procedure was followed except that only magnesium stearate was removed from the components described in Example 1.
[0017]
Comparative Example 2
A component was prepared in the same manner as in Example 1 except that only polyvinyl alcohol was removed.
[0018]
Test example 1
For Examples 1 to 4 and Comparative Examples 1 and 2, the adhesion of punches and the appearance of tablets were examined. The appearance of the tablets was evaluated by visual observation. A tablet without darkening was indicated by a circle, and a tablet with darkening was indicated by a cross. The evaluation of the sticking of the punches was indicated by ○ when no sticking occurred 5 minutes after the compression molding was started by the tableting machine, and by X when the sticking occurred. The results are shown in Table 1 below.
[0019]
[Table 1]
Figure 2004352633
[0020]
From Table 1, it was found that in Comparative Example 1, in which only polyvinyl alcohol was blended without blending magnesium stearate with magnesium oxide, darkening was observed in the tablets and punch sticking occurred during the production. In Comparative Example 2, in which only magnesium stearate was blended without blending polyvinyl alcohol with magnesium oxide, no darkening was observed in the tablets, but it was found that punch sticking occurred during the production. On the other hand, in the magnesium oxide tablets (Examples 1 to 4) in which polyvinyl alcohol and magnesium stearate were blended with magnesium oxide, no darkening was observed, and no sticking of punches during production was observed.
[0021]
Production Example 1
2000 g of magnesium oxide, 100 g of carmellose calcium, 370 g of crystalline cellulose, 30 g of magnesium stearate, and 100 g of polyvinyl alcohol were mixed with a high-speed stirring granulator (high-speed mixer: Fukae Kogyo Co., Ltd.), and 1500 g of ethanol was added and kneaded. And dried (vacuum dryer SDM-30: manufactured by Sasa Engineering Co., Ltd.) and sized (New Speed Mill ND-10: manufactured by Okada Seiko Co., Ltd.) to obtain granules for tableting. The obtained granules for tableting were compression-molded with a rotary tableting machine (Collect 19TU: manufactured by Kikusui Seisakusho) using a φ8.5 mm punch to produce a tablet of 260 mg per tablet.
[0022]
Production Example 2
2000 g of magnesium oxide, 80 g of sennoside AB, 100 g of low-substituted hydroxypropylcellulose, 340 g of crystalline cellulose, 30 g of magnesium stearate, and 100 g of polyvinyl alcohol were mixed with a high-speed stirring granulator (high-speed mixer: Fukae Kogyo Co., Ltd.), and ethanol was added. After 1600 g was added and kneaded, the mixture was dried (flow coater: manufactured by Freund) and sized (New Speed Mill ND-10: manufactured by Okada Seiko) to obtain granules for tableting. The obtained granules for tableting were compression-molded with a rotary tableting machine (Correct 19TU: manufactured by Kikusui Seisakusho) using a φ8.5 mm punch to produce tablets of 265 mg per tablet.
[0023]
【The invention's effect】
According to the present invention, it is possible to obtain a magnesium oxide tablet which does not cause darkening in appearance and does not cause sticking of a punch during production. Since the magnesium oxide tablet of the present invention has a beautiful appearance and does not cause sticking of punches during production, it is possible to mass-produce a magnesium oxide tablet having a high commercial value and a uniform appearance.

Claims (5)

酸化マグネシウム、ポリビニルアルコール及びステアリン酸マグネシウムを含有する酸化マグネシウム錠剤。A magnesium oxide tablet containing magnesium oxide, polyvinyl alcohol and magnesium stearate. 酸化マグネシウム含量が製剤全量に対して50〜95重量%である請求項1に記載の酸化マグネシウム錠剤。The magnesium oxide tablet according to claim 1, wherein the magnesium oxide content is 50 to 95% by weight based on the total amount of the preparation. ポリビニルアルコールが、ポリ酢酸ビニルをけん化したものである請求項1又は2に記載の酸化マグネシウム錠剤。The magnesium oxide tablet according to claim 1 or 2, wherein the polyvinyl alcohol is obtained by saponifying polyvinyl acetate. ポリビニルアルコール含量が製剤全量に対して0.5〜10重量%である請求項1〜3のいずれかに記載の酸化マグネシウム錠剤。The magnesium oxide tablet according to any one of claims 1 to 3, wherein the polyvinyl alcohol content is 0.5 to 10% by weight based on the total amount of the preparation. ステアリン酸マグネシウム含量が製剤全量に対して0.1〜5重量%である請求項1〜4のいずれかに記載の酸化マグネシウム錠剤。The magnesium oxide tablet according to any one of claims 1 to 4, wherein the content of magnesium stearate is 0.1 to 5% by weight based on the total amount of the preparation.
JP2003150920A 2003-05-28 2003-05-28 Magnesium oxide tablet Pending JP2004352633A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006249052A (en) * 2005-03-14 2006-09-21 Kyowa Hakko Kogyo Co Ltd Magnesium oxide particle
JP2009013113A (en) * 2007-07-05 2009-01-22 Ootsuka:Kk Functional nutritive food tablet
JP2014210764A (en) * 2013-04-03 2014-11-13 大正製薬株式会社 Powder
JP2015048316A (en) * 2013-08-30 2015-03-16 アサヒフードアンドヘルスケア株式会社 Magnesium oxide-containing tablet, and method for manufacturing the same
WO2016175042A1 (en) * 2015-04-30 2016-11-03 協和化学工業株式会社 Medicinal agent containing magnesium compound as active ingredient
CN115487160A (en) * 2022-09-27 2022-12-20 威海百合生物技术股份有限公司 Magnesium oxide sheet and preparation method thereof

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006249052A (en) * 2005-03-14 2006-09-21 Kyowa Hakko Kogyo Co Ltd Magnesium oxide particle
JP2009013113A (en) * 2007-07-05 2009-01-22 Ootsuka:Kk Functional nutritive food tablet
JP2014210764A (en) * 2013-04-03 2014-11-13 大正製薬株式会社 Powder
JP2015048316A (en) * 2013-08-30 2015-03-16 アサヒフードアンドヘルスケア株式会社 Magnesium oxide-containing tablet, and method for manufacturing the same
WO2016175042A1 (en) * 2015-04-30 2016-11-03 協和化学工業株式会社 Medicinal agent containing magnesium compound as active ingredient
CN115487160A (en) * 2022-09-27 2022-12-20 威海百合生物技术股份有限公司 Magnesium oxide sheet and preparation method thereof

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