My Daughter Has Autism With Hx Of Schizp. And Hallucinations

my daughter has autism with hx of schizp. and hallucinations . She is currently taking Geodon 80mg bid with Cogentin. She has had many bad side effects. I wanted to try her with this med to help her with her anxiets. The md had to up her Cogentin because she was having so many bad side effects and all the med does is make her sleepy. Do you think that it will be ok to try her on this med?