A solid medicinal preparation containing the compound of the following general formula (I) or a pharmacologically acceptable salt thereof. It has improved content uniformity. The solid medicinal preparation contains: (A) the compound of the following general formula (I): or a pharmacologically acceptable salt thereof; and (B) mannitol or lactose which, when examined under specific conditions, has a particle size distribution in which the 90% cumulative diameter is 80 to 300 µm.