Anxiety
"I was recommended to switch from xanax to vistaril, but the vistaril did not help with my anxiety at all.  I became extremely irritable (probably from the increased anxiety not being treated with xanax anymore).  I did not notice any positive effects even after taking it for a month.  I was told this medication was fast acting for panic attacks like xanax, but they did not help with the panic attacks in the least bit.  I highly recommend that if you have severe debilitating anxiety to not even try this drug based on what I went through."