Abstract: Objective: To investigate the feasibility of swelling hydrogel instead of polyethylene oxide as swelling polymer in push-layer of push-pull osmotically controlled-release tablets.

• 中文摘要: 目的：考察常用亲水膨胀材料替代聚氧乙烯作为推动层的膨胀推动剂用于制备推拉型渗透泵控释片的可行性。