<qa>  What is the Canadian product label and Product Monograph?Eligible subjects will be randomized in a 1:1 ratio to receive either 1 study medication, Radium 223 monthly for six months or 2 no treatment usual care. All patients will have a physical exam, PSA, testosterone and clinical lab tests conducted monthly. Group 1 will receive monthly Radium 233 beginning one month after discontinuing ADT, for a maximum of 6 months of treatment. Radium-223 will be given in accordance with the Canadian product label and Product Monograph at 50kBqkg. 