Hi Steph, I am not hormone resonsive either but I took Aromasin and it is what they put the ladies on when the Tamoxefin stops working, no reasoning for it but I had it while I was waiting for radiation to the neck and the lumps went from the Aromasin and I didn't need radiation THAT time around, I seem to only get one go at everything so it is worth asking your onc about it..

Love & Big hugs Lyn