| abstract |
[Problem] To provide a preparation which is stable to external factors regardless of the packaged forms thereof and which contains, as an active ingredient, 2-chloro-5-(2H-tetrazol-5-yl)-4-[(thiophen-2-ylmethyl)- amino]benzenesulfoneamide, a pharmacologically acceptable salt of the compound, or a hydrate of the compound or the pharmacologically acceptable salt.n[Solution] A coated preparation comprising an active-ingredient-containing section which contains 2-chloro-5-(2H-tetrazol-5-yl)-4-[(thiophen-2-ylmethyl)- amino]benzenesulfoneamide, a pharmacologically acceptable salt of the compound, or a hydrate of the compound or the pharmacologically acceptable salt and a coating layer which is formed on the surface of the active-ingredient-containing section, said coated preparation being characterized in that the coating layer contains rutile-type titanium dioxide. |