An adhesive comprising a base with tackiness, an oil and ketoprofen, whereinthe adhesive contains no L-menthol, the base is composed at least of a tackycompositioncomprising an elastomer and a tackifier and/or a tacky polymer containing anunsaturatedmonomer with a total of 5 or more carbon atoms as the monomer unit, the oil isan oil that iscompatible with the tacky composition and the tacky polymer, and the oilcontent is 150-175parts by weight with respect to 100 parts by weight as the total of the tackycomposition andthe tacky polymer. The adhesive may be used in a skin adhesive plaster.