Bioerodible porous compositions

Details Bioerodible porous compositions Bioerodible porous compositions

1997-02-24

2000-08-01

Azpuru, Carlos A.

Drug, bio-affecting and body treating compositions

Preparations characterized by special physical form

Particulate form

424499, 424500, 428402, 264 433, 264 46, A61K 950, B32B 516, B01J 1302

Patent

active

060963441

ABSTRACT:
A composition for the sequestration and sustained delivery of an active ingredient in the form of porous particles, the composition comprising the product of the controlled dehydration of particles formed by the reaction of a polymeric anionic material with a polyvalent cation. The composition may be loaded with an active ingredient by soaking the particles in a solution of the active ingredient; and may then be dehydrated. They may then be soaked in a solution of a polymeric cationic material, to form particles providing the controlled release of the active ingredient.

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