Hello @Ady my oncologist recommended Krill Oilwhich I take daily and working well so far.Some ladies on here say there is a difference in side effects for them between Femara and the generic version Letrozole because of the coating the drug is encased in.I walk daily for an hour and whilst some days I start with some discomfort - yesterday my ankle - I find I can walk thru it and it comes good.Hope you have had your bone density checked as Letrozole thins bones - if this is the case there are treatments for osteoporosis like Prolia injections that I have 6monthly. I say this as a sign of osteoporosis is hip or back pain.Finally a lot of ladies on here find Magnesium very helpful - I myself take daily Caltrate Bone and Muscle Health 2 tablets daily -1morning 1 afternoon - they are Calcium , Vitamin D and other minerals including a bit of Magnesium.