Dr. prescribed for bone-loss prevention and b/c of supposed benefits in breast cancer prevention. I'm post-menopausal, my bone density has been fine, my mother had breast cancer, I try to live healthy lifestyle, exercise, eat healthy foods and take vitamins, calcium. I never went to full doses - started with half-doses twice weekly as per dr's rx, increased to half-doses daily, decreased to a half-pill twice weekly, due to increase in hot flashes. After laying awake in bed with such overall aching that I could not get in a comfortable position, began thinking I should search web for possible side effects not listed in drug insert. What an eye-opener! It's a new year and I am going to stop taking to see if symptoms improve! I like my doctor, but am beginning to wonder if he listens to drug salesmen too much!