From what I've heard, this particular drug will be administered as a twice-yearly injection. And it's NOT a bisphosphonate! Doesn't surprise me that it's going to be VERY expensive, either. As with all new meds, and even though extensive clinical trials have been done, we'll probably have to wait who knows how long till the real picture begins to become clear regarding side effects. They are apparently stating that there are few of these. But who knows? We're all different, with different metabolisims.
I believe the FDA is about to approve it - or at least, will be doing so soon. (Or maybe they already have, I'm not sure). For the time being I am just taking calcium citrate, magnesium citrate, and vit. d3 plus omega fish oil. I feel fine and exercise daily (walking) several hours per day. I'm one of those leery people who doesn't have a lot of confidence in DEXA machines, and even though I've only had one scan (several years ago), I've made the decision not to have any more of them.
NO doubt we'll be hearing much more about this med, but I'm in no rush to try something I know so little about, not to speak of the cost. If my numbers were really very bad, then I might re-consider, but for now, I think I'll just stay with the regimen I'm currently on.