I Am Having Prostrate Cancer.doctor Told Me To Take Abiretcerone250

I am having prostrate cancer.doctor told me to take abiretcerone250 mg four tabs early in the morning with empty stomuch and wysolone 5mg after food morning one evening one. why he asked me take and any problems will be there if I take for one month according to him. I am having psa level 24.Ancologist told me to take one Zolendronic acid monthly once.But uralagist told not necessary to take at present. Pl.gime me advise.