I’ll keep an eye on this thread because I have been on ananstrazole for over 7 months now and have bone and joint pain, back pain, mood swings (estrogen, I know), brain fog, weakness. Makes it hard to do much. I wasn’t really bad, just constant. Oncologist recommended change to exemestane 2 visits ago but I declined because I “wasn’t that bad” and the same side effects exist with all the ai meds. Last visit, he took me off because as he said - I shouldn’t have to live in pain. Just 6 days off and I already feel better and more mobile. So I also have to decide what to try next and they report more cardiac effects with exemestane so scares me a little. So as I said, I’ll watch this and thanks in advance for all who answer and help us out.