Device for delivering drug to certain pH environments

Drug – bio-affecting and body treating compositions – Identification or warning feature – Taste or smell or chemical irritation to the eye – nose – or...

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Details

424 32, 424 33, 424 34, 424 35, A61K 924, A61K 922, A61K 932, A61K 936

Patent

active

045030308

ABSTRACT:
An osmotic device is disclosed for delivering a beneficial agent to a first environment having a pH of 1.0 to 3.5 inclusive and to a second environment having a pH of greater than 3.5 to 8.0. The device maintains its integrity in the first environment and loses its integrity in the second environment.

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