Breast Cancer Now Forum

I have been on tamoxifen for 3 years and out of the blue have started getting really bad back pain, shoulder and arm pain and now knee pain. I am a cyclist and this is really affecting my cycling. I’ve been for nerve testing, MRI’s etc and doctors don’t know what it is. I’m convinced it’s the tamoxifen. I want to stop it for a while and see if it makes any difference. I can’t end up with reumotoid arthritis from this drug. ... View more