I came across this very interesting article about using CBD oil for pain. I have arthritis in my hands and feet, and am taking Letrozole, which gives me menopause symptoms, following surgery for breast cancer. I asked my McMillan nurse about CBD oil and she simply didn't know. The consultant who treats my arthritis said it was ok to take for pain relief, but that was before I was diagnosed with cancer. I still don't have an answer, but am tempted to try it out.