COATING COMPOSITION, COATING FILM, AND COATING PREPARATION AND METHOD FOR PRODUCING SAME 5 A coating composition containing (A) an alginic acid salt and (B) a bivalent cation, wherein the ratio of the content of the component (B) to the content of the component (A), which is expressed by the formula: (B)/(A) × 100, is 0.015 to 0.25 by mass. According to the present invention, a coating composition which cannot be dissolved in the stomach but 10 can be dissolved in the intestine, makes it possible to deliver a substance, e.g., an active ingredient, coated therewith to the intestine, can coat uniformly without cracking or chipping, and has excellent coatability, a coating film produced using the coating composition, a coated preparation which is coated with the coating composition, and a method for producing the coated preparation can be provided. 15 [No Suitable Figure] -46-
