I have had two patients recently with breast cancer who were on Tamoxifen, an estrogen inhibitor. A fairly common side effect of Tamoxifen is joint pains. For many of these women, it presents as an arthritic condition affecting both large and small joints.
When these two women started using as little as 1 mg BID of CBD, their pains were significantly improved. One of them restarted exercising within a day.
I will be following these women and am communicating with their oncologists and will post more on this topic as more experience is gathered.