I've lost track of the source of my statement about the rebound effect. If I find it, I'll post. When I searched for "prolia rebound effect" today, I got many articles discussing fractures that occurred after discontinuing Prolia after several years of using it. This is quite different from what I understood "rebound effect" to be. What I thought I had read was that it could appear out of the blue while still on Prolia. In any event, all the information I could find on any of the side effects simply classified them as "most common," "less common," "rare," etc.