The invention belongs to the field of a pharmaceutical preparation, and relates to a sustained-release
microsphere preparation of a
goserelin composition and a preparation method of the sustained-release
microsphere preparation. Specifically, the
goserelin composition includes
goserelin and a
polypeptide composition capable of enhancing
immunity, wherein the polypeptide capable of enhancing
immunity comprises
thymalfasin,
thymopentin and
thymosin beta4. The sustained-release
microsphere consists of 0.1-40% (w / w) of goserelin and polypeptide capable of enhancing
immunity in terms of the total weight of the microsphere, 60-99.9% of a biodegradable and biocompatible
high polymer material which is 5,000-200,000Dalton in molecular weight in terms of the weight of the microsphere, and 0-10% of other pharmaceutically acceptable accessories in terms of the weight of the microsphere. The sustained-release microsphere disclosed by the invention is 5-20microns in average grain size and encapsulation efficiency is more than 80%. The sustained-release duration of the sustained-release microsphere can last for several days or several months, so that administration frequency is obviously reduced,
bioavailability is improved, the toxic and side effects of
medicine are reduced, and the sustained-release microsphere is conducive to clinic treatment. The production process of the finished product is good in reproducibility and good in feasibility.