I am on my last year of Femara (hooray) and while I have had some side effects, I have had none of the aching joints or arthritic pains that my oncologist warned about at the start and that others have experienced. For other reasons, I have taken magnesium, fish oil and vitamin D for a long time, and have been on calcium since I decided to cut back on some high fat dairy foods (still drink quite a bit of low or no fat milk as Femara is not good for bone density). Have no idea if these have helped or not!! But no aches or pains.