PROBLEM TO BE SOLVED: To provide an L-carbocysteine-containing orally disintegrating tablet that can be produced at a general production facility with good productivity, has a high hardness, has a short disintegration time, and has a reduced size.SOLUTION: An orally disintegrating tablet comprises (A), (B) and (C), the content of (A) being 70 mass% or more in the tablet and the content of (C) being 5 mass% or more and 30 mass% or less in the tablet, wherein (A) is L-carbocysteine or salt thereof, (B) is a water-soluble binder with a viscosity of 10 mPa s or less at 25°C of 2 mass% aqueous solution, and (C) a disintegrator.
