<prompt> Isotopes used in relief of metastatic bone pain includes a Strontium89b I131c Gold198d P32e Rheniuml86acdadeabdad  <response>: Radiopharmaceuticals radioactive isotopes used for metastatic bone pain are strantium Sr, Samarium Sm153, Rhenium Re186, Phosphorus P32, and Tin Sn117.Some guides have included I-131 also as the answer, but Iodine-131 is not used for metastatic bone pain. 