According to my endo doc and Keith McCormick's book "Great Bones" Prolia should be followed with Reclast. If you did Prolia then Evenity (and there are no studies on that apparently) you will still need Reclast according to those sources. If not, then there will be bone loss and increase in fracture risk.

I posted on another thread the detailed instructions for transitioning from Prolia to Reclast, which has to be timed properly using CTX blood tests. Too early and it may not work, and too late, the bone loss may have already occurred. The CTX should be every 4-6 weeks and when it rises, that is when the previous drug has worn off and time to do Reclast, which can last two years according to some studies. Usually it is done annually.

There is no info on timing with Evenity but a transition to Reclast (or Prolia) is needed to avoid a drop in bone density and increase in fracture risk.

Reclast "locks in" gains and we may be able to take med breaks.

McCormick and my docs say that if you go from Prolia to Forteo or Tymlos, those drugs aren't effective. Evenity is too new so transition from Prolia to Evenity is not covered in the book's info.