Osmotically controlled oral drug delivery systems: an update review
Wang, W-Ping.; Xie, X-Qiong.; Yang, D-Jian.; Chen, S-Lin.
Zhongguo Zhong Yao Za Zhi 33(5): 598-602
2008
ISSN/ISBN: 1001-5302 PMID: 18536389 Document Number: 619105
Osmotically controlled oral drug delivery systems (OCODDSs) utilize osmotic pressure for controlled delivery of active agents. The release of drugs from osmotic systems is governed by various formulations and processing factors such as solubility and pressure of the core components, properties of the semi-permeable membrane. In the present review, the references on OCODDSs have systematically been summarized in the following aspects: prescription design, industrial processing and equipments, methods for quality evaluation, and general situation of application. Prospect of applying the osmotic-pump technology into Chinese patent drugs is also discussed.