Pharmaceutical delivery system
AssigneeBurroughs Wellcome Co.
InventorsRichard W. Baker, James W. Brooke
Life of this patent
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Abstract
A composition for use in an aqueous environment which comprise a formulation containing a water-soluble pharmaceutically beneficial agent, a water-insoluble, water-permeable film coating surrounding the formulation, and particulate, water-soluble, pore-forming material dispersed within the film coating.
Claims6
A tablet comprising a core containing the admixture of a water-soluble medicine and a water-soluble osmotic enhancing agent in an amount by weight about equal to or greater than the weight of the medicine, said core having a water-insoluble, water-permeable coating surrounding said core, said coating containing particulate, water-soluble, pore-forming material dispersed therein.
A composition comprising a core containing the admixture of a water-soluble medicine and a water-soluble osmotic enhancing agent in an amount by weight about equal to or greater than the weight of the medicine, said core having a water-insoluble, water-permeable coating surrounding said core, said coating containing particulate, water-soluble, pore-forming material dispersed therein and an agent to increase the water permeability of the coating dispersed therein.
Dependencies are inferred from the claim text.