I had 12 shots of Evenity ( a shot every 30 days for a year.) The Evenity was great for me so far. I was able to get my back surgery done and the surgeon stated to me after my surgery that my bones looked really good. Last week, I had my 3rd shot of Prolia (twice per year). I am concerned about the Prolia but the only thing so far with that drug is that I have been tired. I can stand and walk much longer now and that should keep improving as time goes on. I do have to do exercises though.