Sustained release microcapsule

Details Sustained release microcapsule Sustained release microcapsule

1992-08-31

1994-07-19

Lovering, Richard D.

Drug, bio-affecting and body treating compositions

Preparations characterized by special physical form

Particulate form

424461, 4284022, 42840221, 42840222, 514963, A61K 950, A61K 952, B01J 1304

Patent

active

053307674

ABSTRACT:
Microcapsules are advantageously produced with high take-up of a water-soluble drug by preparing a W/O emulsion composed of a water-soluble drug-containing solution as the inner aqueous phase and a polymer-containing solution as the oil phase, dispersing said emulsion in an aqueous phase and subjecting the resulting W/O/W emulsion to an in-water drying, wherein the viscosity of the W/O emulsion used in preparing the W/O/W emulsion is adjusted to about 150 to about 10,000 centipoises.

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