Pharmaceutical compositions

Details Pharmaceutical compositions Pharmaceutical compositions

2005-11-08

2005-11-08

Spear, James M. (Department: 1615)

Drug, bio-affecting and body treating compositions

Preparations characterized by special physical form

Particulate form

C424S435000, C424S436000, C424S451000, C424S458000, C424S464000, C424S465000, C424S466000, C424S467000, C424S468000, C424S474000, C424S479000, C424S489000, C424S490000, C424S494000, C424S497000

Reexamination Certificate

active

06962717

ABSTRACT:
A pharmaceutical composition for slow release of active ingredient in the gastrointestinal tract, comprising a plurality of active ingredient-containing particles coated with a material insoluble in gastric and intestinal juices, where the particles have as core a homogeneous mixture comprising an active pharmaceutical ingredient and a polymer insoluble in gastric and intestinal juices, with an average internal pore diameter not exceeding 35 μm, makes efficient and pH-independent delaying of release possible even with comparatively small amounts of polymer. It is additionally distinguished by a long shelf life and is particularly suitable also for nonspherical particles.

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