Disclosed is a high-dose tablet which contains 2-[[6-[(3R)-3-amino-1-piperidinyl]-3,4-dihydro-3-methyl-2,4-dioxo-1(2H)- pyrimidinyl]methyl]-4-fluorobenzonitrile (compound (A)) or a salt thereof as a pharmaceutically active ingredient. Specifically disclosed is a tablet which contains the compound (A) or a salt thereof, and a fluidizer, with the content of the compound (A) being 35-50% by weight.
