@bayhorse Forteo came out much earlier. The company did studies on extending therapy. Radius has not done that for Tymlos. There is nothing inherently different in Forteo versus Tymlos in this regard: it is just what has been studied. Studies take time and money and people and I read that it was unlikelu Radius will commit to those.

The issue, in my experience, is that the PTH analogs stop working at some point. This can perhaps be ascertained by bone marker testing though my doctors have different opinions on that. I was told most of my bone growth happened before 18 months when I finally had a DEXA.

Extending treatment may help some who are still responding. I don't know if anyone is. Your doctor could tell you. Doing Forteo after Tymlos might be possible but I haven't heard of anyone who has done that as yet perhaps because of the issue of effectiveness petering out. Maybe someone will chime in who has done this or knows more about it.