(1) A tablet according to the present invention has a percentage content of 1-cyclopropyl-8-(difluoromethoxy)-7-[(1R)-1-methyl-2,3-dihdro-1H-isoindole-5-yl]-4-oxo-1,4-dihydroquinoline-3-carboxylic acid methanesulfonic acid hydrate of between 80 wt% and 97.5 wt%. (2) The tablet is smaller is size than 200mg of a commercially available Geninax tablet. (3) As a result, drug compliance is improved, (4) leachability is high, and (5) hardness and friability are high. (6) As a result, the present invention withstands film coating and transportation, and is useful as a tablet of methanesulfonic acid hydrate of chemicals compound A.
