The purpose of the present invention is to provide a pharmaceutical composition which can be dissolved well in a neutral region and contains a compound (I) a pharmacologically acceptable salt of the compound or a solvate of the compound or the pharmacologically acceptable salt as an active ingredient. The present invention relates to a pharmaceutical composition comprising (A) N (5 chloropyridin 2 yl) N ((1S 2R 4S) 4 [(dimethylamino)carbonyl] 2 {[(5 methyl 4 5 6 7 tetrahydrothiazolo[5 4 c]pyridin 2 yl)carbonyl]amino} cyclohexyl)ethanediamide a pharmacologically acceptable salt of the compound or a solvate of the compound or the pharmacologically acceptable salt and (B) an acid or a salt thereof.