A patch comprising a support layer and an adhesive agent layer, wherein the adhesive agent layer contains diclofenac or a pharmaceutically acceptable salt thereof, glycerin, butyleneglycol,and poly(ethyleneglycol) monooleate, and a mass ratio between the butylene glycol and the poly(ethylene glycol) monooleate (mass of butylene glycol:mass of poly(ethylene glycol) monooleate) is 1:1 to 4:1.本發明係一種貼附劑,其係包括支持體層與黏著劑層者,且上述黏著劑層含有雙氯芬酸或其藥學上容許之鹽、甘油、丁二醇、及聚乙二醇單油酸酯,並且上述丁二醇與上述聚乙二醇單油酸酯之質量比(丁二醇之質量:聚乙二醇單油酸酯之質量)為1:1~4:1。
