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Dosage form containing (s)-pantoprazole as active ingredient

a technology of active ingredients and oral administration forms, which is applied in the field of pharmaceutical technology, can solve the problems of affecting the effect of acid-labile active compounds, affecting the effect of dietary intake, and requiring a large amount of preparation and preparation, and achieves the effect of avoiding traces of moisture, avoiding dietary intake, and avoiding dietary intak

Inactive Publication Date: 2006-09-28
ALTANA PHARMA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the substances suitable for enteric coatings are those having free carboxyl groups, the problem results that the enteric coating is partly dissolved or even dissolved from inside because of the alkaline medium in the interior and the free carboxyl groups promote the decomposition of the active compounds.
Moreover, a considerable effort is to be made in the preparation to avoid traces of moisture.
As the abovementioned prior art shows, the production of peroral administration forms for acid-labile active compounds requires technically complicated processes.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

examples

A. Synthesis of Magnesium (−)-bis{[5-(difluoromethoxy)]-2-[(3,4-dimethoxy-2-pyridinyl)methylsulphinyl]-1H-benzimidazolide}dihydrate

[0075] At 20-25° C., 20.2 g (52.7 mmol) of (−)-pantoprazole{(−)-[5-(difluoromethoxy)]-2-[(3,4-dimethoxy-2-pyridinyl)methylsulphinyl]-1H-benzimidazole} are suspended in 200 ml of purified water. A solution of (55.2 mmol) sodium hydroxide in 10 ml of water is added, and the mixture is stirred at 20-30° C. for 30 min. With addition of a filter aid (1 g Hyflo-Super-Cel), the turbid solution is filtered. 6.32 g (31.2 mmol) of magnesium dichloride hexahydrate in 150 ml of water are then added dropwise with stirring over a period of 30 min. After a further 30 min., the precipitated solid is filtered off with suction using a Nutsche filter, stirred with water (2×50 ml) and again filtered off with suction. Drying under reduced pressure at 50-60° C. gives, in a yield of 17.36 g (80%), a hydrate of magnesium (−)-bis{[5-(difluoromethoxy)]-2-[(3,4-dimethoxy-2-pyridi...

example c.1

Pellets Made by Wurster Coating (Nonpareilles):

[0083] I. Active Pellets:

a.) Sucrose starter pellets (0.425-0.5 mm)500.0 gb.) Sodium carbonate 30.0 gc.) (S)-Pantoprazole-Mg dihydrate300.0 gd.) Polyvinylpyrrolidone K 25 35.0 g

[0084] a. is sprayed with an aqueous dispersion of b., c. and d. in a fluidised bed process (Wurster equipment) or other suitable equipments (e.g. coating pan).

[0085] II. Intermediate Layer (Subcoating):

e.) Hydroxypropylmethylcellulose120.0 g f.) Titanium dioxide2.0 gg.) LB Iron oxide yellow0.2 gh.) Propylene glycol24.0 g 

[0086] e. is dissolved in water (A). f. and g. are suspended in water using a high shear mixer (B). A and B are combined and after addition of h. the resulting suspension is sieved through a suitable sieve. The suspension is sprayed onto 500 g of the active pellets obtained under I using a fluidised bed process (Wurster) or other suitable processes (e.g. coating pan).

[0087] III. Coating with a Layer which is Resistant to Gastric Juice (E...

example c.2

Pellets Made by Wurster Coating (Nonpareilles):

[0090] I. Active Pellets:

a.) Cellulose pellets (0.6-0.7 mm)1000.0 g b.) Sodium carbonate75.0 gc.) (S)-Pantoprazole-Mg dihydrate650.0 g d.) Polyvinylpyrrolidone K 2580.0 g

[0091] a. is sprayed with an aqueous dispersion of b., c. and d. in a fluidised bed process (Wurster equipment) or other suitable equipments (e.g. coating pan).

[0092] II. Intermediate Layer (Subcoating):

e.) Hydroxypropylmethylcellulose250.0 gf.) Titanium dioxide 5.0 gg.) LB Iron oxide yellow 0.45 g

[0093] e. is dissolved in water (A). f. and g. are suspended in water using a high shear mixer (B). A and B are combined and the resulting suspension is sieved through a suitable sieve. The suspension is sprayed onto 1000 g of the active pellets obtained under I using a fluidised bed process (Wurster) or other suitable processes (e.g. coating pan).

[0094] III. Coating with a Layer which is Resistant to Gastric Juice (Enteric Coating):

h.) Eudragit ® L 30 D365.0 gi.) Tr...

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Abstract

Dosage forms for the oral administration of the magnesium salt of (S)-pantoprazole are described.

Description

TECHNICAL FIELD [0001] The present invention relates to the field of pharmaceutical technology and describes a dosage form for oral administration of the magnesium salt of (S)-pantoprazole. The invention additionally relates to processes for producing the dosage form. PRIOR ART [0002] It is generally known to coat peroral administration forms, e.g. tablets or pellets which contain an acid-labile active compound, with an enteric coating which, after passage through the stomach, rapidly dissolves in the alkaline medium of the intestine. Examples of such acid-labile active compounds are acid-labile proton pump inhibitors (H+ / K+ ATPase inhibitors), in particular pyridin-2-ylmethylsulfinyl-1H-benzimidazoles, such as are disclosed, for example, in EP-A-0 005 129, EP-A-0 166 287, EP-A-0 174 726 and EP-A-0 268 956. On account of their H+ / K+ ATPase-inhibiting action, these are of importance in the therapy of diseases, which are due to increased gastric acid secretion. Examples of active comp...

Claims

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Application Information

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IPC IPC(8): A61K31/4439A61K9/20A61K9/26A61K9/28A61K9/32A61K9/50
CPCA61K9/2081A61K9/2846A61K9/2886A61K9/5073A61K9/5078A61K31/4439A61P1/00A61P1/04
Inventor DIETRICH, RANGOANSTETT-KLEIN, ISABELSCHILLER, MARCNEY, HARTMUTHARTMANN, MANFREDSCHAFER-PREUSS, SABINE
Owner ALTANA PHARMA
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