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JPH0347247B2 - - Google Patents
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JPH0347247B2 - - Google Patents

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Publication number
JPH0347247B2
JPH0347247B2 JP59135846A JP13584684A JPH0347247B2 JP H0347247 B2 JPH0347247 B2 JP H0347247B2 JP 59135846 A JP59135846 A JP 59135846A JP 13584684 A JP13584684 A JP 13584684A JP H0347247 B2 JPH0347247 B2 JP H0347247B2
Authority
JP
Japan
Prior art keywords
gelatin
capsules
capsule
hard
sodium bicarbonate
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
JP59135846A
Other languages
Japanese (ja)
Other versions
JPS6115831A (en
Inventor
Masanosuke Matsura
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.)
Qualicaps Co Ltd
Original Assignee
Japan Elanco Co Ltd
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 Japan Elanco Co Ltd filed Critical Japan Elanco Co Ltd
Priority to JP13584684A priority Critical patent/JPS6115831A/en
Publication of JPS6115831A publication Critical patent/JPS6115831A/en
Publication of JPH0347247B2 publication Critical patent/JPH0347247B2/ja
Granted legal-status Critical Current

Links

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  • Medical Preparation Storing Or Oral Administration Devices (AREA)
  • Medicinal Preparation (AREA)

Description

【発明の詳細な説明】[Detailed description of the invention]

産業上の利用分野 本発明はゼラチン硬カプセルに関し、更に詳し
くは、一定した速崩壊性を有するゼラチン硬カプ
セルに関するものである。本明細書において、
「カプセル」なる用語は、医薬などの内容物を収
容するカプセル皮膜を意味するものとし、内容物
を含む場合はカプセル剤という。 ゼラチン硬カプセルは、主として渋味や周激性
のある薬剤を内服し易くする目的に用いられるも
のであり、腸溶性カプセル剤などの一部の例外を
除いて、胃内で速やかに崩壊し、内容薬を胃内に
放出することが望ましい。しかるに、硬カプセル
の基材であるゼラチンは、製造原料や工程の如何
によつてその品質が様々であり、従つて、それか
ら製造されるカプセルは、その崩壊性が一定しな
いという欠点がある。また、ゼラチンカプセル
は、長期保存中に種々の原因で経時変化を来た
し、崩壊性の低下を招くことがあり、臨床上問題
となることも希ではない。 従来技術 そこで、従来、ゼリー強度および粘度が一定値
以下のゼラチンを原料としたり、あるいは、ゼラ
チンがタンパク質であることを利用してゼラチン
にタンパク分解酵素を配合したりして、カプセル
の崩壊を促進させる方法が提案されて来た。しか
しながら、これらの方法で製造されたカプセル
も、その崩壊性は必ずしも一定ではなく、かつ、
経時変化の影響を完全に避け得るものではない。
その上、これらの製法は製造コストが高くなると
いう欠点もあり、とうてい満足すべきものとはい
い難い。従つて、より実用性の高い、速崩壊性硬
カプセルの出現が今なお望まれている。 発明の構成 本発明者は、上記の様な実情に鑑み、胃内で迅
速に崩壊すると共に、その速崩壊性が一定し、か
つ経時変化の影響を受け難いゼラチン硬カプセル
を、容易にかつ低コストで製造する方法を開発す
る目的で鋭意研究を重ねた結果、従来、食品およ
び医薬品の分野で多用されている炭酸水素ナトリ
ウムをゼラチンに配合して硬カプセルを製造すれ
ば、この炭酸水素ナトリウムが胃内の酸性条件下
で炭酸ガスを発生して分解し、この発生したガス
によりゼラチン硬カプセルが迅速かつ確実に崩壊
されるという事実を見出し、本発明を完成するに
至つた。 即ち、本発明は、炭酸水素ナトリウムをゼラチ
ンに配合してなるゼラチン硬カプセルを提供する
ものである。 本発明のゼラチン硬カプセルにおける炭酸水素
ナトリウムの配合率は、ゼラチンに対して1〜20
重量%とすることができる。この範囲を越えて使
用するときは、カプセルを乾燥する間に炭酸水素
ナトリウムが析出し、透明であるべき皮膜が半透
明になるばかりか、充分な強度を保持することが
できない。一方、1%未満の場合には、速崩壊性
が得られないおそれがある。従つて、上記の範囲
内から選択するのが適当であるが、特に好ましい
配合率は5〜10重量%である。 本発明のゼラチン硬カプセルを製造するには、
一般的な処方に従つて調製されたゼラチン溶液
に、適当量の炭酸水素ナトリウムを加えて溶解さ
せ、以降、常法通り成型加工すればよい。ただ
し、次の点に注意することが必要である。炭酸水
素ナトリウムはPH7.5以下では分解し炭酸ガスを
発生するので、炭酸水素ナトリウムを加えるゼラ
チン溶液は、中性ないし弱アルカリ性、例えばPH
7.5〜8.9に調節しておくことが必要である。さら
に、炭酸水素ナトリウムは、水溶液の状態で加熱
されることによつても分解、発泡するので、操作
時の温度を40℃以下に保持する必要がある。通
常、成型操作を円滑に行うための温度を考慮し、
ゼラチン溶液は40〜45℃に保持するのが好まし
い。 上記の如き条件下で、炭酸水素ナトリウムを含
有するゼラチン溶液を調製し、所望により着色
剤、香料などを加え、通常のカプセル製造装置を
用いて任意の号数のカプセルに成型すれば、本発
明のゼラチン硬カプセルを得ることができる。な
お、本発明の硬カプセルは、通常のカプセル製造
用のゼラチン原料を用いて製造しても充分な速崩
壊性を得ることができるが、必要に応じて、低粘
度のゼラチン、コハク酸で処理したゼラチン、も
しくはアルカリ処理ゼラチン単味、またはこれら
の2種以上の混合ゼラチンを使用し、さらにはこ
れらの条件を2つ以上任意に組み合わせて製造す
ることもできる。この様な場合には、より顕著な
速崩壊性が期待できる。 作用効果 本発明のゼラチン硬カプセルは、炭酸水素ナト
リウムを含有しているので、これを服用すると、
炭酸水素ナトリウムが胃内の酸性条件下で速やか
に分解し、この時発生する炭酸ガスによつて容易
に崩壊する。このカプセルの崩壊は炭酸ガスの発
生に起因するので、原料ゼラチンの性質、あるい
はカプセルの経時変化による不溶化の影響を受け
ることが少ない。従つて、一定した、確実性の高
い速崩壊性が得られるのである。しかも、本発明
の硬カプセルは、ゼラチン溶液に炭酸水素ナトリ
ウムを単に配合するだけで容易に製造することが
できるので、低コストであつて工業化に適し、極
めて実用的である。 以下に実施例を挙げて本発明を詳細に説明す
る。 実施例 1 ゼラチン7Kgを蒸留水14に膨潤させ、撹拌下
60℃に加熱して完全に溶解させた。この溶液に酸
化チタン水分散液(21.8重量%)975mlを加え、
次いでPHを、約8.0に調節した。このゼラチン溶
液に炭酸水素ナトリウム350g(ゼラチンに対し
5重量%、ゼラチン溶液中に1.5重量%の濃度)
を水溶液にして加え、粘度を適宜調節した後常法
により脱泡処理した。この様にして得られたゼラ
チン溶液をカプセル製造装置に仕込み、サイズ0
号のカプセルに成型した。 本発明のカプセルの溶解時間および崩壊時間
を、「日本薬局方」第十改正(1981)に記載の試
験法に従つて測定した。炭酸水素ナトリウムを添
加せずに同様にして製造したカプセルを対照とし
た。結果を以下の表1に示す。尚、溶解時間は5
個の試料カプセルの平均値、崩壊時間は6個の試
料カプセルの平均値で表した。
INDUSTRIAL APPLICATION FIELD OF THE INVENTION The present invention relates to hard gelatin capsules, and more particularly to hard gelatin capsules having a constant rapid disintegration property. In this specification,
The term "capsule" refers to a capsule membrane that contains contents such as medicine, and when it contains contents, it is called a capsule. Hard gelatin capsules are primarily used to make it easier to take astringent or irritating drugs, and with some exceptions such as enteric-coated capsules, they quickly disintegrate in the stomach. It is desirable to release the contents into the stomach. However, the quality of gelatin, which is the base material of hard capsules, varies depending on the raw materials and manufacturing process, and therefore, the capsules manufactured from it have the disadvantage that their disintegration properties are not constant. In addition, gelatin capsules undergo changes over time due to various causes during long-term storage, which may lead to a decrease in disintegration properties, which often poses a clinical problem. Conventional technology Therefore, in the past, gelatin with a jelly strength and viscosity below a certain value was used as a raw material, or a proteolytic enzyme was added to gelatin to take advantage of the fact that gelatin is a protein, thereby promoting the disintegration of capsules. A method has been proposed to do this. However, the disintegrability of capsules produced by these methods is not necessarily constant, and
It is not possible to completely avoid the effects of changes over time.
Moreover, these manufacturing methods have the disadvantage of high manufacturing costs, and are therefore hardly satisfactory. Therefore, there is still a desire for a more practical and rapidly disintegrating hard capsule. Composition of the Invention In view of the above-mentioned circumstances, the present inventor has developed a gelatin hard capsule that disintegrates quickly in the stomach, has a constant disintegrating property, and is not easily affected by changes over time. As a result of intensive research aimed at developing a cost-effective manufacturing method, we found that if we mix gelatin with sodium bicarbonate, which has traditionally been widely used in the food and pharmaceutical fields, to make hard capsules, this sodium bicarbonate can be The present invention was completed based on the discovery that carbon dioxide gas is generated and decomposed under acidic conditions in the stomach, and the generated gas quickly and reliably disintegrates hard gelatin capsules. That is, the present invention provides a hard gelatin capsule made by blending sodium bicarbonate with gelatin. The blending ratio of sodium hydrogen carbonate in the hard gelatin capsule of the present invention is 1 to 20% of gelatin.
It can be expressed as % by weight. When used in excess of this range, sodium bicarbonate precipitates during the drying of the capsules, and not only does the film, which should be transparent, become translucent, but it also fails to maintain sufficient strength. On the other hand, if it is less than 1%, there is a possibility that rapid disintegration properties may not be obtained. Therefore, it is appropriate to select from within the above range, and a particularly preferred blending ratio is 5 to 10% by weight. To produce the hard gelatin capsules of the present invention,
An appropriate amount of sodium bicarbonate may be added to a gelatin solution prepared according to a general recipe to dissolve it, and then molded in a conventional manner. However, it is necessary to pay attention to the following points. Sodium bicarbonate decomposes and generates carbon dioxide at pH 7.5 or below, so the gelatin solution to which sodium bicarbonate is added must be neutral or slightly alkaline, for example, pH 7.5 or below.
It is necessary to adjust it to 7.5-8.9. Furthermore, since sodium hydrogen carbonate decomposes and foams when heated in an aqueous solution state, the temperature during operation must be maintained at 40° C. or lower. Usually, considering the temperature for smooth molding operation,
Preferably, the gelatin solution is maintained at 40-45°C. The present invention can be achieved by preparing a gelatin solution containing sodium bicarbonate under the above conditions, adding coloring agents, fragrances, etc. as desired, and molding it into capsules of any size using ordinary capsule manufacturing equipment. hard gelatin capsules can be obtained. Although the hard capsules of the present invention can be manufactured using gelatin raw materials for ordinary capsule manufacturing, sufficient rapid disintegration properties can be obtained; however, if necessary, they may be treated with low-viscosity gelatin or succinic acid. It is also possible to produce gelatin by using gelatin treated with gelatin, single gelatin treated with alkali, or mixed gelatin of two or more of these, or by arbitrarily combining two or more of these conditions. In such cases, more remarkable rapid disintegration can be expected. Effect: The hard gelatin capsule of the present invention contains sodium bicarbonate, so when taken,
Sodium bicarbonate rapidly decomposes under acidic conditions in the stomach, and is easily disintegrated by the carbon dioxide gas generated at this time. Since this collapse of the capsule is caused by the generation of carbon dioxide gas, it is less affected by the properties of the raw material gelatin or by insolubilization due to changes in the capsule over time. Therefore, a constant and highly reliable rapid disintegration property can be obtained. Furthermore, the hard capsules of the present invention can be easily produced by simply adding sodium bicarbonate to a gelatin solution, and therefore are low cost, suitable for industrialization, and extremely practical. The present invention will be explained in detail by giving examples below. Example 1 7 kg of gelatin was swollen in 14 kg of distilled water and stirred.
It was heated to 60°C to completely dissolve it. Add 975ml of titanium oxide aqueous dispersion (21.8% by weight) to this solution,
The PH was then adjusted to approximately 8.0. Add 350 g of sodium bicarbonate to this gelatin solution (concentration of 5% by weight relative to gelatin and 1.5% by weight in gelatin solution).
was added as an aqueous solution, the viscosity was adjusted appropriately, and then defoamed by a conventional method. The gelatin solution obtained in this way was charged into a capsule manufacturing device, and the size 0
It was molded into a No. 2 capsule. The dissolution time and disintegration time of the capsules of the present invention were measured according to the test method described in the 10th edition of the Japanese Pharmacopoeia (1981). Capsules prepared in the same manner without the addition of sodium bicarbonate served as a control. The results are shown in Table 1 below. In addition, the dissolution time is 5
The disintegration time was expressed as the average value of six sample capsules.

【表】 * 肩部分から穴が開き、崩壊した。
** カプセル:サイズ0号;キヤツプ、ホワイト
;ボデイ、ホワイトオペイク
実施例 2 炭酸水素ナトリウムをゼラチンに対して10重量
%加えた以外は実施例1と同様にしてゼラチン硬
カプセルを得た。 この硬カプセルは実施例1で得たカプセルと同
様の溶解時間並びに崩壊時間の短縮効果を示し
た。
[Table] * A hole opened in the shoulder area and it collapsed.
** Capsule: Size 0; Cap, White; Body, White Opaque Example 2 Hard gelatin capsules were obtained in the same manner as in Example 1, except that 10% by weight of sodium hydrogen carbonate was added to the gelatin. This hard capsule showed the same shortening effect on dissolution time and disintegration time as the capsule obtained in Example 1.

Claims (1)

【特許請求の範囲】[Claims] 1 炭酸水素ナトリウムをゼラチンに対して1〜
20重量%の割合で配合してなる速崩壊性ゼラチン
硬カプセル。
1. Sodium bicarbonate to gelatin 1 to 1
Rapidly disintegrating hard gelatin capsules containing 20% by weight.
JP13584684A 1984-06-29 1984-06-29 Rapidly disintegrable hard gelatin capsule Granted JPS6115831A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13584684A JPS6115831A (en) 1984-06-29 1984-06-29 Rapidly disintegrable hard gelatin capsule

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13584684A JPS6115831A (en) 1984-06-29 1984-06-29 Rapidly disintegrable hard gelatin capsule

Publications (2)

Publication Number Publication Date
JPS6115831A JPS6115831A (en) 1986-01-23
JPH0347247B2 true JPH0347247B2 (en) 1991-07-18

Family

ID=15161127

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13584684A Granted JPS6115831A (en) 1984-06-29 1984-06-29 Rapidly disintegrable hard gelatin capsule

Country Status (1)

Country Link
JP (1) JPS6115831A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH044712Y2 (en) * 1986-05-07 1992-02-12
KR100456273B1 (en) * 2001-11-16 2004-11-10 김용년 Solid formulation producing carbon dioxide when contacting liquid acid and a method of preparing the same

Also Published As

Publication number Publication date
JPS6115831A (en) 1986-01-23

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