Just to let you know, I struggled on Anastrazole with crippling joint pain. BCN advised changing to Tamoxifen after a 4 week break to clear my system. Best thing I could have done and Cons advises there is little extra protection from A compared to T, just happy that I stay on some form of endocrine treatment.
Maybe ask your oncologist if Anastrazole would be suitable. I had a few issues initially while I was on Herceptin but I’m largely ok now. Keeping active has helped me too. I walk everywhere. Hope find a solution x