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Generated: October 22, 2017

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Title: Stabilized pharmaceutical composition and its production
Abstract:The pharmaceutical composition of the invention, which comprises a benzimidazole compound of the formula ##STR1## wherein R.sup.1 is hydrogen, alkyl, halogen, cyano, carboxy, carboalkoxy, carboalkoxyalkyl, carbamoyl, carbamoylalkyl, hydroxy, alkoxy, hydroxyalkyl, trifluoromethyl, acyl, carbamoyloxy, nitro, acyloxy, aryl, aryloxy, alkylthio or alkylsulfinyl, R.sub.2 is hydrogen, alkyl, acyl, carboalkoxy, carbamoyl, alkylcarbamoyl, dialkylcarbamoyl, alkylcarbonylmethyl, alkoxycarbonylmethyl or alkylsulfonyl, R.sup.3 and R.sup.5 are the same or different and each is hydrogen, alkyl, alkoxy or alkoxyalkoxy, R.sup.4 is hydrogen, alkyl, alkoxy which may optionally be fluorinated, or alkoxyalkoxy, and m is an integer of 0 through 4, and a basic inorganic salt stabilizing agent, is physically stable. Magnesium and calcium basic inorganic salt stabilizing agents are particularly useful.
Inventor(s): Makino; Tadashi (Osaka, JP), Tabata; Tetsuro (Osaka, JP), Hirai; Shin-Ichiro (Kyoto, JP)
Assignee: Takeda Chemical Industries, Ltd. (Osaka, JP)
Filing Date:Aug 08, 2001
Application Number:09/924,234
Claims:1. A stabilized pharmaceutical composition for the inhibition of gastric acid secretion, comprising:

an effective amount of a 2-[(2-pyridyl)methylsulfinyl]benzimidazole compound or a pharmaceutically acceptable salt thereof having gastric acid secretion inhibitory property;

a basic inorganic salt stabilizing agent, comprising sodium carbonate, in an amount effective to stabilize the composition, the benzimidazole compound or its salt being in contact with the stabilizing agent evenly; and

an enteric coating for the composition.

2. A method of providing a gastric acid secretion inhibitory effect to a subject in need thereof, comprising:

orally administering to the subject a stabilized pharmaceutical composition, comprising:

an effective amount of a 2-[(2-pyridyl)methylsulfinyl]benzimidazole compound or a pharmaceutically acceptable salt thereof having a gastric acid secretion inhibitory property;

a basic inorganic salt stabilizing agent, comprising sodium carbonate, in an amount effective to stabilize the composition, the benzimidazole compound or its salt being in contact with the stabilizing agent evenly; and

an enteric coating for the composition.

3. In a method of preparing a pharmaceutical composition for the inhibition of gastric acid secretion that contains a 2-[(2-pyridyl)methylsulfinyl]benzimidazole compound or a pharmaceutically acceptable salt thereof having a gastric acid secretion inhibitory property as an active ingredient, the improvement comprising admixing a basic inorganic salt stabilizing agent comprising sodium carbonate to be in even contact with the 2-[(2-pyridyl)methylsulfinyl]benzimidazole compound or pharmaceutically acceptable salt thereof, and providing an enteric coating.
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Mallinckrodt
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