An adhesive patch which is provided with a support layer and an adhesive layer, and wherein the adhesive layer contains at least one substance selected from the group consisting of butorphanol and pharmaceutically acceptable salts thereof, an adhesive base agent and an antioxidant that contains a sulfur atom in each molecule.本發明之貼附劑係具備支持體層及黏著劑層者,並且 上述黏著劑層含有選自由布托啡諾及其藥學上所容許之鹽所組成之群中之至少1種、黏著基劑、及於分子內具有硫原子之抗氧化劑。無