The present invention relates to: an oral tablet composition comprising amorphous dexlansoprazole, mannitol having an average particle size of 100 to 400 µm, a disintegrating agent and a lubricant； an oral tablet comprising same； and a method for manufacturing same. The oral tablet composition, according to the present invention, exhibits excellent hardness, has a shortened disintegration time, and at the same time, may be used to provide an oral tablet having improved friability. In addition, according to the present invention, a dry direct compression method is used as the method for manufacturing the oral tablet, and thus an increase in production efficiency by simplifying the production process may be achieved.
