Hi, I was diagnosed with secondary breast cancer last November. I am also on Letrozole and do get bone pain but I am also on Denosumab and Palbociclib which makes me very tired but the doctor told me I would get bone pain from the Letrozone. I was on Tamoxifen for 7 years first and my cancer only returned because I wasn't swiched over to Letrozole. Good luck you may not get the side effects. Another side effect I noticed was my hair going very thin anyone with ideas to stop this happening.
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