Early in the 1970s, the slow-release and controlled-releasepreparation and the corresponding materials had been researched.
在上世纪70年代，国外就开始了缓控释制剂及材料的研究开发。
2
RESULTS Hydroxypropyl cellulose is extensively used in tablets, capsules, mucous membrane adhesion preparation, sustained or controlledreleasepreparation, and film coating, etc.
结果羟丙基纤维素在片剂、 胶囊剂、黏膜黏附制剂、缓控释制剂等多种制剂以及薄膜包衣方面均有良好应用。
3
Conclusions Dihydropyridine calcium antagonist is promising, and the sustained releasepreparation or controlledreleasepreparation would be more and more frequently used.