Prozac may induce a remission after several months, and she could come off it then. But later she may need to go back on. Prozac can cause irritability, difficulty sleeping, or excessive sleepiness. It can also cause dizziness, headaches, upset stomach, nausea, vomiting, and diarrhea. In a very small group of children, it has been associated with increased risk for suicide, hostility, and unusual behavior. Is it a child psychiatrist making the diagnosis and prescribing the medicine? You want to be sure the doctor taking care of her is experienced in diagnosing and treating these kinds of problems in children. Hope this answers your query.