Disclosed are microspheres having a core/shell structure and a spherical shape, wherein (a) the core comprises solid-state aripiprazole, and (b) the shell coats all or most of the surface of the core, and the shell comprises a biodegradable polymer a process for producing the microspheres and an injcctable aqueous suspension formulation containing the microspheres and the like.本發明揭示具有芯/殼結構及球形之微球(其中(a)該芯包含固態阿立哌唑(aripiprazole),且(b)該殼覆蓋該芯之全部或大部分表面,且該殼包含可生物降解之聚合物);用於製造該微球之方法;及含有該微球之可注射之水性懸浮液調製劑;及類似者。
