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缓释制剂指用药后能在较长时间持续释药以达到长效作用的制剂 ,控释制剂指药物能在预定时间自动以预定速度释放 ,使血药浓度长时间维持在有效浓度范围。缓释控释制剂属于现代给药系统 ,可较持久地传递药物 ,减少给药次数与剂量 ,降低血浓峰谷现象 ,有利于降低药物毒副作用 ,提
Sustained-release preparations refer to preparations that can be sustainedly released after a long-term administration to achieve a long-acting effect. The controlled-release preparation refers to a drug that can be automatically released at a predetermined speed at a predetermined time to maintain the plasma concentration for a long time in an effective concentration range. Sustained-release controlled-release formulations belong to the modern drug delivery system, which can deliver drug more durably, reduce the frequency and dose of administration, reduce the peak blood concentration and valley, and reduce the side effects of drugs