Process for preparing pharmaceutical tablet capable of releasing

Details Process for preparing pharmaceutical tablet capable of releasing Process for preparing pharmaceutical tablet capable of releasing

1994-05-24

1996-01-30

Phelan, D. Gabrielle

Drug, bio-affecting and body treating compositions

Preparations characterized by special physical form

Tablets, lozenges, or pills

424464, 424474, 424475, A61K 922

Patent

active

054879019

ABSTRACT:
A pharmaceutical tablet capable of releasing the active ingredients contained therein at subsequent times produced via the steps of: a) preparing a tablet consisting of three superposed layers, the upper layer containing an active ingredient, the intermediate layer not containing any active ingredient and forming a barrier-type layer, and the lower layer containing an active ingredient, said upper layer presenting a raised top, b) coating the tablet entirely with an impermeable polymeric film, and c) removing said raised top and thus allowing contact of the abraded upper layer surface with the environment.

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