OBJECTIVE To prepare Aripiprazole polylactic-co-glycolic acid( PLGA) sustained-release microspheres and study on its release in vitro. METHODS PLGA microspheres loading Aripiprazole were prepared by emulsion-solvent evaporation method.The optimum preparation was selected with orthogonal experiments. The indicators were evaluated using loading efficiency,entrapment efficiency,particle size,morphology and the in vitro release characteristics. RESULTS The drug loading was 20. 28% ± 0. 38%,and the encapsulation...