I did Forteo for two years but I resisted it for about 2-3 years before that. Every specialist I saw (around 4) wanted me on it. I was reluctant. Then I had another fractured vertebrae--my third and I knew I had to do something. Those fractures can be very painful. The doctor who did my kyphoplasty said some of my vertebrae were like "eggshells". His words not mine. So I agreed to go on it. The Forteo wasn't as bad as I thought it would be. I did develop knee pain and my low back pain seem a bit worse but I managed. Once I ended the Forteo, my knee pain went away and my low back wasn't quite as bad. My bone density improved while I was on it. I was then put on Prolia which I have now been on for about 7 years. As for the injections, I didn't find them bad at all. It just became part of my daily routine.