you need to take it in very large dosages, which means you need to swallow it in these capsules that evade your stomach, and dissolve in your intestines. if anything goes wrong in that process, you're going to end up with a nasty ulcer.
then, you can probably increase the density of your bones with fluorapatite, but it's not clear that you're going to strengthen them. that's fine with your teeth, which are going to fall out eventually anyways, but not really fine with your hips, which you only get one shot at - and are done if they ever fail.
...and, even that only works if you get it early enough.
the newer medication is covered. i should focus on that, instead.