An orally-administered agent comprised of a laminated body having surface layers is provided. The laminated body comprises a medicine-containing layer containing a medicine and having surfaces and at least one gel-forming layer provided on one of the surfaces of the medicine-containing layer as one of the surface layers of the laminated body. The at least one gel-forming layer includes a gel-forming agent to be swelled and gelatinized when absorbing a water-based liquid. A water absorption speed per 1 g of the gel-forming layer with respect to water of 37°C is 0.5 g/(g·s) or higher. A gel fraction of the gel-forming layer is 20 mass% or more when the gel-forming layer is dipped into an aqueous solution of 0.9 mass% of sodium chloride having a temperature of 37°C.
