The present application relates to a kind of
goserelin microspheres preparation method and its product, comprising the following steps:
goserelin raw material solution and degradable
polymer solution are mixed, obtain
oil phase;Surfactant is mixed with water, obtain water phase;
Oil phase is mixed in water phase, form
emulsion, stirring solidification, obtain
goserelin microspheres;Wherein, the
solvent of goserelin
raw material solution and degradable
polymer solution is each independently co-
solvent, the co-
solvent is obtained by mixing first solvent and second solvent.The preparation method compared to traditional multiple
emulsion method operation is simpler, and the goserelin microspheres prepared simultaneously has higher
drug loading and smaller particle size, can realize the injection administration of 7 needle, the surface of
microsphere is no hole, burst release is low, can realize the uniform distribution of
drug in
microsphere, and substantially no
acetic acid residue.