| abstract |
[PROBLEMS] To provide a sustained-release preparation which increases the uptake rate of a physiologically active polypeptide, suppresses early leakage after administration, and shows a constant release rate over a long period of time, and a method for producing the same. A sustained-release preparation characterized by dispersing a physiologically active polypeptide in an organic solvent solution of a metal salt of a biodegradable polymer and shaping the same, and a method for producing the same. |