Hi kimmydawn,I am diagnosed with bipolar(mixed states,rapid cycling)and borderline personality disorder(among other things).I don't know your brother's paticulars but it has been very helpful to me in various situations.When I have been psychotic(hearing voices)Ihave been abla to take quite large doses with out feeling overly drugged.I take it now for on going psychotic symptoms which are not debilitating and to help me sleep and I can only take a very small amount or I get very fuzzy and hung over.I know that it is being used more and more for things other than psychosis with good reviews.For me,it is a matter of watching my dose.Sometimes as little as .25 mg at night makes a noticeable difference to me.This can be a complex diagnosis and difficult to treat.I am glad your brother has you for support.All the best.jill.