Provided are an oral formulation capable of improving easy administrability and showing good preservation stability and a substrate for oral formulation. An oral formulation containing a medicament; sugar alcohol; one or more kinds of hydrophilic polysaccharides selected from the group consisting of acacia pullulan and maltodextrin; a gelling agent; and water and a substrate for oral formulation which contains sugar alcohol; the above mentioned hydrophilic polysaccharides; a gelling agent; and water.