A monomer composed of 6-((7s) -7-hydroxy-6,7-dihydro-5h-pirrolo 1,2-c imidazol-7-il-N-methyl-2-naftamida, D-Manitol and alkaline metal salts selected from magnesium and calcium silicate; and a stabilizer of the compound for the prevention and/or silicate L Tumor treatment.

摘要

The present invention provides a solid preparation wherein variation in weight is suppressed, a solid preparation wherein the active ingredient is stabilized, and a stabilization method thereof. A solid preparation containing (1) an active ingredient, (2) D-mannitol and (3) an alkaline earth metal salt selected from magnesium aluminometasilicate and calcium silicate. A method of stabilizing the. active ingredient, including adding an alkaline earth metal salt selected from magnesium aluminometasilicate and calcium silicate.