PROBLEM TO BE SOLVED: To provide orally disintegrating tablets excellent in tablet hardness and disintegration properties.SOLUTION: In an orally disintegrating tablet containing a drug, erythritol, binder, and lubricant, the erythritol content of the orally disintegrating tablet is defined as 50-98 mass% to the total mass of the orally disintegrating tablet the pore volume Vof the orally disintegrating tablet with the pore size of 0.1-100 μm is defined as 0.15-0.40 ml/g and the ratio (V/V) of the pore volume Vof the orally disintegrating tablet with the pore size 0.1-10 μm with respect to the Vis defined as 0.50-1.00.SELECTED DRAWING: None
