Hello, I took Forteo a long time ago. I had to inject myself every single day for two years. I had gone to the Hospital for Special Surgery and was under the care of a renowned physician. Anyway, two years later after. having a bone density test there was improvement in one of the two areas. They said I had to go back on bisphosphonates in order not to lose the improvement that I had made. At that point I decided to quit all of those drugs as I had been on them for many years. I am 77 years old now and I have had a total hip replacement two years ago. I will need another hip replacement in a few years. I have had osteoporosis since my early 50's. Just got sick of taking drugs that did not work.