I am currently on tamoxifen after recently being diagnosed with Mets. I am 49 and this was my first diagnosis. As I am not post menopause my Oncologist has put me on this medication and a planned surg...
I went through menopause naturally the year before diagnosis - migraines were one of the banes of my existence during that time so I'm guessing that tamoxifen just mirrors it. Much as the docs don't like codeine, Panadeine Forte was the only thing that helped.