Does anyone have any experience with Invega? It was described to me as similiar to Risperdal, but no weight gain. It's terribly expensive, insurance or not. difficult child has had his first dose this AM, but I've not noticed much difference in his behavior. Perhaps it has to build up in his system. We weaned him off Abilify and he's been manic ever since with one bout of a meltdown severe enough that he missed his band concert. Just wondered if anyone has experience with it....thanks!