Fine granules containing an active ingredient and having an average particle diameter of 50 m to 500 m and a content ratio in the orally disintegrating tablet of 1 mass% or more and 40 mass% or less with respect to the total mass of the orally disintegrating tablet, And an excipient ingredient outside the fine granules.有効成分を含み、平均粒子径が50μm~500μmであり、かつ、口腔内崩壊錠中の含有比率が口腔内崩壊錠の全質量に対して1質量%以上40質量%以下である細粒と、細粒外の賦形成分とを含有する、口腔内崩壊錠。