Oral or mucosal preparation containing an active ingredient, with controlled active ingredient release, and its use
AssigneeKTS Kignabb Therapie-Systeme AG
InventorChristian Von Falkenhausen
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Abstract
The invention relates to the use of a preparation containing a first group of particles and at least one other group of particles which is not identical to the first group of particles for achieving controlled release of an active ingredient present in the cores of the particles, in particular in the human and veterinary medical sectors. The preparation is administered orally, rectally, vaginally etc. The release of the active ingredient then takes place in the appropriate medium, and there is transmucosal absorption of the active ingredient.
Claims17
An active ingredient-containing oral or mucosal preparation with controllable active ingredient release, which contains a plurality of particles to form a multiparticulate system, each particle consisting of an active ingredient-containing core and of a covering which is substantially free of active ingredient and is erodable or soluble in the moist or aqueous medium of a body fluid, and the multiparticulate system containing the particles on or in a carrier substrate, and the carrier substrate being a preparation which rapidly disintegrates in the moist or aqueous medium of a body fluid and releases the particles, characterized
- in that particles with identical core substance and identical covering substance are to be assigned to different groups according to their relative proportions by weight, with identical groups displaying identical erosion and release behaviour, and
- in that cores of different particles contain active ingredient in different concentrations, and
- in that the means for controlling the release kinetics of the active ingredient is the mixing ratio of different groups of particles.
A preparation comprising a first group of mutually identical particles and at least one other group of mutually identical particles, characterized in that
- a) the particles of the first group have a core and a coating layer,
- b) the particles of the at least one other group have a core and a coating layer,
- c) the mutually identical particles of the first group are not identical to the mutually identical particles of the at least one other group,
- d) the core of the particles of the first group has a particular weight GK1,
- e) the coating layer of the particles of the first group has a particular weight GU1,
- f) said weights of core and coating layer of the particles of the first group are in a particular constant ratio GK1:GU1,
- g) the core of the particles of the at least one other group has a particular weight GKn,
- h) the coating layer of the particles of the at least one other group has a particular weight GUn,
- i) the said weights of core and coating layer of the particles of the at least one other group are in a particular constant ratio GKn:GUn, and the ratio GK1:GU1 is not identical to the ratio GKn:GUn.
A process for the production of a preparation comprising a first group of mutually identical particles and at least one other group of mutually identical particles, where the mutually identical particles of the first group are not identical to the mutually identical particles of the at least one other group, characterized by steps:
- a) production of the active ingredient-containing cores of the first group of particles,
- b) production of the active ingredient-containing cores of a second group of particles,
- c) coating of the active ingredient-containing cores of the first group of particles with a first coating layer,
- d) coating of the active ingredient-containing cores of the second group of particles with a second coating layer, where either the cores of the first group of particles are not identical to the cores of the second group of particles, or the first coating layer is not identical to the second coating layer, and
- e) mixing the first group of particles and the second group of particles.
A method for the controllable release of active ingredients in the gastric fluid region having a body fluid having a moist or aqueous medium, comprising the steps of:
- applying an active ingredient-controlling preparation with controllable active ingredient release in the gastric fluid region, said preparation comprising a plurality of particles to form a multiparticulate system, each particle consisting of an active ingredient-containing core and a covering which is substantially free of active ingredient(s) and is erodable or soluble in the moist or aqueous medium of the body fluid of said region, and the multiparticulate system containing the particles on or in a carrier substrate, the carrier substrate being a preparation which rapidly disintegrates in the moist or aqueous medium of the body fluid and releases the particles;
- rapidly disintegrating said preparation in the moist or aqueous medium of a body fluid of said region to release said plurality of particles in said medium;
- and
- assigning particles with identical core substance and identical covering substance to different groups according to their relative proportions by weight, with identical groups displaying identical erosion and release behavior;
- wherein cores of different particles contain active ingredient(s) in different concentrations and wherein the means for controlling the release kinetics of the active ingredient(s) is the mixing ratio of different groups of particles.
Dependencies are inferred from the claim text.