Thank you for your reply and info. I'm aware of the many side effects of AI's from the myriad comments posted. What took me by surprise is that my joint pain came on after a fair amount of time being on them (1.5 yrs), or perhaps I was just naive to think that all of the side effects would hit me in the first few months of being on the drug and that I was somewhat in the car. With the exacerbated joint pain, I'm now questioning what damage is being done longer term. I will definitely be discussing with my oncologist next month and getting more testing to determine osteoporotic changes. Thank you again for your assistance.