RT-102 delivered the active drug with 300% to 400% higher bioavailability for 20 mcg and 80 mcg of PTH, respectively, when compared to 20 mcg of Forteo delivered via subcutaneous injection.

there's a different kind of drug called Forteo. This other drug actually stimulates the formation of new bone. It's a daily injection. It's a little more, well, it's a lot more expensive right now ...

In other words, these medication change your bone balance so that you can actually get some of your lost bone back. One medication, Forteo, builds bone by making the bone building cells work harder.