近年来新发展起来一种可以控制药物释放速率的制剂,制备时将药物置于一种人工合成的优质惰性聚合物中,制成内服、外用、植入等剂型。使用后药物在体内或在与身体接触的部位缓缓释放,发挥局部或全身作用。药物释放完闭,聚合物随之溶化或排出体外。本类型制剂按其释放速率可分为缓释制剂及控释制剂。 缓释制剂 In recent years, a newly developed formulation that can control the rate of drug release is prepared by placing the drug in a synthetic, high-quality, inert polymer for oral, topical, implant or other dosage forms. After use drugs in vivo or in contact with the body parts slowly release, play a local or systemic role. After the drug is completely released, the polymer melts or excretes. The type of preparation according to its release rate can be divided into sustained-release preparations and controlled release formulations. Sustained release formulations