In southern california I would try the Didi Hirsch
mentalMental retardation
Mental status tests health service in Los Angeles. If you are not in Los Angeles, they can make an appropriate referral.
If you don't think the medication is working, you should go back to your doctor for a dose change or a medication change. I would not try herbals. They have not been studied. This is a serious problem that requires the best medical care. There are doctors who specialize in this problem so be sure and go to a well qualified expert.