Hello
I have been on Letrozole for over 4 years after 5 years of Tamoxifen.
I didn't have any problems re aches and pains until earlier this year. I take 1000mg cod liver oil and 3 tablets of glucosamine daily which has helped. Usually it is stiffness which wears off after I get myself going.
My problem was with my mouth which has been diagnosed as Burning Mouth Syndrome which started 6 months after starting Letrozole, apparently 1 in 3 post menopausal ladies get in but I think I am in the minority on these forums.
I'm sure you will get more posts re Letrozole.
Hazel