DD was on tenex for a few weeks, which I believe is a short acting version of intuniv. I was really hoping that something "non-stimulant" would work for her (thinking it would be safer). It turned her into a literal zombie--she was not the slightest bit hyperactive but seemed to have no affect at all and looked like she was going to drop dead. She had zero focus, so it didn't help that at all. Her teacher called me alarmed, saying that she had never seen a child act like that before.
It's weird (and scary) how one drug can work so well for one kid and be a disaster for another. I wish I understood it better.