Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Tablets – lozenges – or pills
Patent
1986-09-02
1988-08-23
Michl, Paul R.
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
Tablets, lozenges, or pills
A61K 922
Patent
active
047659890
ABSTRACT:
An osmotic system is disclosed comprising a wall comprising in at least a part of a semipermeable material that surrounds a compartment. The compartment contains an osmotic composition comprising a beneficial drug selected from the group consisting of nifedipine, prazosin and doxazosin, and a second and different osmotic composition. A passageway in the wall connects the first composition with the exterior of the system.
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Barclay Brian L.
Deters Joseph C.
Theeuwes Felix
Wong Patrick S.-L.
ALZA Corporation
Mandell Edward L.
Michl Paul R.
Sabatine Paul L.
Stone Steven F.
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