Objective:To Prepared cetirizine hydrochloride sustained-release preparations in order to confirm its extension of drug efficacy.
目的：制备盐酸西替利嗪缓释制剂以验证其缓释制剂延长药效的作用。
Conclusion: The equal distance release method is a simple, practical method, and is a better release method of sustained-release preparations in vitro.
结论：等距浸出法简单实用，是一种较好的长效制剂的体外释放新方法。
In this article the research on oral sustained and controlled release preparations is surveyed.
本文综述了口服缓控释制剂研究概况。
Hydroxypropylmethylcellulose(HPMC), as hydrophilic gel matrix, is widely applied in the study of controlled release and sustained release preparations.
羟丙基甲基纤维素（HPMC）作为构成亲水凝胶骨架片的主要控释、缓释材料广泛用于药物的控释和缓释制剂的研究。
Hydroxypropylmethylcellulose(HPMC), as hydrophilic gel matrix, is widely applied in the study of controlled release and sustained release preparations.
羟丙基甲基纤维素（HPMC）作为构成亲水凝胶骨架片的主要控释、缓释材料广泛用于药物的控释和缓释制剂的研究。
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