Administration form for the oral application of poorly soluble drugs
First Claim
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1. Pharmaceutical composition with a bioavailability of the active substance which is substantially independent of the gastric pH, for oral administration of active substances with pH-dependent solubilities and a dose number of more than 1 at a pH>
- 5, comprising a plurality of pellets synthesised in each case from a) a core material, b) an optional insulating layer, c) an active substance layer and d) an optional coating, wherein the core material consists of one or more pharmaceutically acceptable organic acid(s) with a water solubility of more than 1 g/250 ml at 20°
C., optionally with the addition of binders or other technological adjuvants.
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Abstract
The invention relates to a new formulation for oral administration of active substances with pH-dependent solubility characteristics and the pharmacologically acceptable salts thereof, which improves the bioavailability of the active substance.
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Citations
11 Claims
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1. Pharmaceutical composition with a bioavailability of the active substance which is substantially independent of the gastric pH, for oral administration of active substances with pH-dependent solubilities and a dose number of more than 1 at a pH>
- 5, comprising a plurality of pellets synthesised in each case from
a) a core material, b) an optional insulating layer, c) an active substance layer and d) an optional coating, wherein the core material consists of one or more pharmaceutically acceptable organic acid(s) with a water solubility of more than 1 g/250 ml at 20°
C., optionally with the addition of binders or other technological adjuvants. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
- 5, comprising a plurality of pellets synthesised in each case from
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11. Process for preparing a pharmaceutical composition for oral administration containing an active substance with pH-dependent solubility characteristics and a dose number>
- >
1 at pH>
5 or one of the physiologically acceptable salts thereof, comprising the steps of;
a) synthesising the core material from one or more pharmaceutically acceptable organic acid(s) with a water solubility of more than 1 g/250 ml at 20°
C., optionally with the addition of binders or other technological adjuvants, by pan methods, on pelleting plates or by extrusion/spheronisation,b) applying an insulating layer consisting of one or more water-soluble, pharmaceutically acceptable polymers, optionally with the addition of plasticisers, separating agents and/or pigments, to the core material, c) applying the active substance from a dispersion containing binder and optionally separating agent, and simultaneously or subsequently drying to eliminate the dispersing agent, d) optionally applying a coating of film-forming agents, plasticisers and optionally pigments and e) packing the pellets containing active substance thus obtained into hard capsules.
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Specification