Controlled release powder and process for its preparation

Details Controlled release powder and process for its preparation Controlled release powder and process for its preparation

1988-03-17

1990-08-28

Page, Thurman K.

Drug, bio-affecting and body treating compositions

Preparations characterized by special physical form

Biocides; animal or insect repellents or attractants

424408, 424417, 424422, 424423, 424426, 424427, 424434, 424437, 424440, 424441, 424456, 424462, 424470, 424494, 424497, A61K 958, A61K 960, A61K 968, A61K 926

Patent

active

049524020

ABSTRACT:
A controlled release powder containing discrete micro-particles for use in edible, pharmaceutical and other controlled release compositions is disclosed. The micro-particles have an average size in the range of from 0.1 to 125 .mu.m. Each of the micro-particles is in the form of a micromatrix of an active ingredient uniformly distributed in at least one non-toxic polymer. The micro-particles have a predetermined release of active ingedient when the dissolution rate thereof is measured according to the Paddle Method of U.S. Pharmacopoeia XX at 37.degree. C. and 75 r.p.m.

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