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| Treatment of sexual dysfunction in certain patient groups |
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Oral composition containing particles comprising an active substance
| Details |
Inventors: Ibsen, Lars S.;
Assignee: A/S Alfred Benzon (Copenhagen, DK)
Primary Examiner: Page; Thurman K.
Assistant Examiner: Spear; James M.
Attorney, Agent or Firm: Bryan, Cave, McPheeters & McRoberts
An oral composition which is adapted to be dispersed in an aqueous carrier substantially immediately prior to administration comprises a multiplicity of particles comprising an active substance, the particles being combined with one or more gelling or swelling agents capable of forming a viscous medium around the particles in an aqueous carrier as well as being provided with a masking surface layer when dispersed in the aqueous carrier. This serves to mask uneven surfaces on the particles and prevent them from adhering to oral mucosa when the composition is ingested and thus makes it easier to administer large dosages of an active substance. The masking surface layer is preferably provided by an increased viscosity of the viscous medium in the immediate vicinity of the particles relative to the viscosity of the surrounding aqueous carrier. A ready-to-use composition is prepared by mixing the composition with an aqueous carrier substantially immediately prior to administration of the composition. |
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DETAILED DESCRIPTION I claim: 1.
An oral composition in dry form adapted to be reconstituted in an aqueous carrier, the composition comprising a multiplicity of solid particles which have sizes and shapes such that they normally feel gritty and which remain solid after reconstitution with the aqueous carrier, the particles a) containing at least one active substance selected from the group consisting of drugs, vitamins and nutrients; and b) comprising a first viscosity-increasing agent which, upon reconstitution with the aqueous carrier, provides the surfaces of the particles with an aqueous masking surface layer of higher viscosity than the viscosity prevailing in the aqueous medium resulting from reconstitution with the aqueous carrier, the masking surface layer being in intimate contact with the surfaces of the solid particles and thereby reducing the grittiness of said particles and/or contributing to masking any unpleasant taste of the active substance, and said first viscosity-increasing agent being selected from the group consisting of: i) at least one gelling or swelling agent, ii) a substance having a redox potential such that, in the aqueous medium resulting from reconstitution with the aqueous carrier, it is oxidized or reduced, iii) a substance which forms a salt or chelate with a gelling or swelling agent dispersed in said aqueous medium, and iv) a surfactant which reduces the surface tension of the water in said aqueous medium; the particles being admixed with at least one second viscosity-increasing agent which is different from the first viscosity-increasing agent and which, upon reconstitution with the aqueous carrier, imparts to the aqueous medium resulting from the reconstitution with the aqueous carrier a viscosity which is higher than the viscosity of the aqueous carrier for reducing the tendency of the particles to settle, to adhere to a container from which the reconstituted composition is administered, or to adhere to the oral mucosa.
2.
The oral composition of claim 1, wherein the first viscosity-increasing agent is a gelling or swelling agent and wherein said second viscosity-increasing agent is a different gelling or swelling agent
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Vasodialators 
