I think the medication you mean is Vistaril. Here's a link to info on this medication:
http://www.rxlist.com/cgi/generic/vistaril.htm
With all due respect to the pshosp psychiatrist, Depakote is not a quick fix. In order to really know whether it is working or not, you need to take it at a therapeutic level (measures between 100 and 125 on the blood level test) for 6 to 8 weeks. Was he at a therapeutic level? We know he hasn't been on it for 6 to 8 weeks.