An object of the present invention is to provide an aqueous film coating solution, and the like, which has good acid resistance and sustained release properties as well as the flexibility suitable for the tablet compression force and are highly productive and cost efficient. The aqueous film coating solution of the present invention comprises an ethyl acrylate/methyl methacrylate copolymer dispersion, a methacrylic acid copolymer LD, a plasticizer, titanium oxide and water, wherein the solid mass ratio of the ethyl acrylate/methyl methacrylate copolymer dispersion, the methacrylic acid copolymer LD, the plasticizer and the titanium oxide is 100:(40 to 100):(5 to 50):(5 to 30) and the solid content thereof is 5 to 20 mass %.