The present invention relates to a pharmaceutical composition for the treatment of type 2 diabetes in mammals including human beings, wherein the pharmaceutical composition contains (3aS,5s,6aR)-5-(2-((2S,4S)-2-cyano-4-fluoropyrrolidine-l-yl)-2-oxo-ethylamino)-N,N,5-trimethyl-hexahydro-cyclopenta[C]pyrrole-2(1H)-carboxamide or its pharmaceutically acceptable salts and metformin or its pharmaceutically acceptable salts (such as hydrochlorate), preparation method thereof and a method of treating 2 type diabetes in mammals including human beings with the composition.本發明公開了治療包括人類之哺乳動物中第2型糖尿病的醫藥組成物,特別是含有(3aS,5s,6aR)-5-(2-((2S,4S)-2-氰基-4-氟-吡咯烷-1-基)-2-氧乙胺基)-N,N,5-三甲基-六氫環戊[C]吡咯-2(1H)-甲醯胺或其藥學上可接受的鹽和二甲雙胍或其藥學上可接受的鹽(如鹽酸鹽)的固定劑量組合的醫藥組成物,製備該醫藥組成物的方法和該醫藥組成物治療包括人類之哺乳動物中第2型糖尿病的用途。
