The present invention provides a packaged product of a solid preparation containing 5-hydroxy-1H-imidazole-4-carboxamide or a salt thereof, or a hydrate thereof, which comprises the solid preparation and an environment-controlling agent packaged together. The packaged product of present invention is useful as a packaged product of a solid preparation containing 5-hydroxy-1H-imidazole-4-carboxamide or a salt thereof, or a hydrate thereof, with which discoloration of the solid preparation is suppressed, and superior storage stability of the solid preparation is obtained.
