I took 12 shots of Evenity for a year. I didn't have any problems on Evenity. I had painful broken bones and then I found out that I had Osteoporosis. The surgeon would not do surgery to fix me until I had treated my bones. After two years, I am having surgery next week. I don't ever want to have another broken bone in my back again. I went on Prolia twice per year in September. I have had one shot of Prolia but I have reservations about this drug.