The present invention provides a tablet, wherein the stability of active ingredients (potassium ion competitive acid blocker and acetyl salicyclic acid) is high, and the pharmacological effect of the active ingredients after administration can be expressed stably and rapidly.The tablet of the present invention is tablet having inner core and outer layer, wherein the inner core is an enteric coated tablets containing acetyl salicyclic acid, and the outer layer contains non-enteric coated potassium ion competitive acid blocker.本發明係提供活性成分(鉀離子競爭性酸阻斷劑及乙醯水楊酸)之安定性高,投予後活性成分之藥理效果可安定且快速表現的錠劑。本發明為具有內核及外層之錠劑,內核為含有乙醯水楊酸之腸溶性包覆錠,外層含有未經腸溶性包覆之鉀離子競爭性酸阻斷劑。