I have never heard of it. I might be switching from Geodon to Abilify soon and my p-doc did not mention that such a switch would necessitate a hospitalization. He would have mentioned it if it were true - he went through my choices for Geodon replacement and one of the choices was another AP, Abilify. I am sure he would have warned me had there been a true need to go inpatient as I would have then had to arrange for time off work. I doubt, frankly, that it is the case.