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。
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。
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