A sustained-release preparation composed of tablets that contain: (a) a mixture of a drug with a water-soluble polymer or a solid dispersion comprising the same, (b) polyvinyl alcohol, and (c) one or more salts selected from the group consisting of trisodium citrate, sodium sulfate sodium chloride and that are coated with a coating (d) which comprises a water-insoluble polymer, a water-soluble polymer and/or an enteric polymer, showing an arbitrarily controllable releasing pattern and releasing rate, and being suitable for the administration of the drug once or twice a day.
一种由片剂组成的缓释制剂,其中含有(a) 药物与
水溶性聚合物的混合物或由
水溶性聚合物组成的固体分散体,(b) 聚
乙烯醇,(c) 从
柠檬酸三
钠、
硫酸钠、
氯化钠组成的组中选出的一种或多种盐,并包有由
水不溶性聚合物、
水溶性聚合物和/或肠溶性聚合物组成的包衣(d),显示出可任意控制的释放模式和释放速度,适合每天给药一次或两次。