Anastrozole
"Since taking this medication, I have extreme joint pain.  I have to pull myself up the stairs at home. It takes me quite a while to make it up the two flights of stairs.  My husband says I have bad breathe since being on this the past four years which is embarrassing.  I've read on other sites that others have experienced that.  And I sleep an average of 4 hours a night with the insomnia that I have.  My oncologist  thinks I'm making this up which is so unprofessional.  So many people have these same symtoms. I'm 50."