SOLID PHARMACEUTICAL COMPOSITION WITH A FIRST FRACTION OF A DISPERSION MEDIUM AND A SECOND FRACTION OF A MATRIX, THE LATTER BEING AT LEAST PARTIALLY FIRST EXPOSED TO GASTROINTESTINAL FLUIDS
First Claim
1. A coated solid pharmaceutical composition in the form of a single dosage unit for oral use, the composition comprising a first and a second fraction,i) the first fraction comprises a therapeutically and/or prophylactically active substance dispersed in a dispersion medium that is sufficiently fluid at body temperature,wherein the first fraction is placed between two second fractions, between a coating and a second fraction, or alternatively is completely surrounded by a second fraction, the first fraction has a melting point cut off of at the most about 38°
- C., andthe active substances contained in the first fraction is released relatively fast once the second fraction has eroded, andii) the second fraction comprises an erodable matrix comprising a substantially water soluble or crystalline polymer or a mixture of substantially water soluble and/or crystalline polymers, the polymer being a polyethylene oxide having a MW of from 20,000 daltons to about 700,000 or a block copolymer of ethylene oxide and propylene oxide having a MW of from about 3,000 to about 30,000 daltons, or a mixture thereof,wherein the composition is coated with a coating having at least one opening exposing one surface of the matrix of the second fraction, and the coating is substantially insoluble in and impermeable to body fluids.
7 Assignments
0 Petitions
Accused Products
Abstract
A solid pharmaceutical composition in the form of a single dosage unit for oral use, the composition comprising a first and a second fraction, the first fraction comprises a therapeutically and/or prophylactically active substance dispersed in a dispersion medium that is sufficiently fluid at body temperature and the second fraction comprises a matrix comprising a substantially water soluble and/or crystalline polymer or a mixture of substantially water soluble and/or crystalline polymers, the first fraction being included in the composition in such a manner that at least a part of the second fraction is firstly exposed to the gastrointestinal fluids upon administration before the first fraction becomes exposed. The system is designed to release the active substance after a predetermined period of time after administration, and the release of the active substance at that point in time is relatively fast.
-
Citations
40 Claims
-
1. A coated solid pharmaceutical composition in the form of a single dosage unit for oral use, the composition comprising a first and a second fraction,
i) the first fraction comprises a therapeutically and/or prophylactically active substance dispersed in a dispersion medium that is sufficiently fluid at body temperature, wherein the first fraction is placed between two second fractions, between a coating and a second fraction, or alternatively is completely surrounded by a second fraction, the first fraction has a melting point cut off of at the most about 38° - C., and
the active substances contained in the first fraction is released relatively fast once the second fraction has eroded, and ii) the second fraction comprises an erodable matrix comprising a substantially water soluble or crystalline polymer or a mixture of substantially water soluble and/or crystalline polymers, the polymer being a polyethylene oxide having a MW of from 20,000 daltons to about 700,000 or a block copolymer of ethylene oxide and propylene oxide having a MW of from about 3,000 to about 30,000 daltons, or a mixture thereof, wherein the composition is coated with a coating having at least one opening exposing one surface of the matrix of the second fraction, and the coating is substantially insoluble in and impermeable to body fluids. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
- C., and
Specification