"my experience with it.  the medicine works great for itch relief (pruritis) and anxiety.  i have graves disease, this was to treat anxiety temporarily after thyroid storm.  the problem i had with it was it made me to doped feeling to function normally.  i stayed tired and experienced grumpiness and lack of patience.  i&#039;ve taken xanax, and elavil before and definitely was able to work, socialize normally unlike this medicine, there is no way i can take it every four to six hours and function throughout the day. i&#039;ve never been one to tolerate antihistamines very well, i get the shakes etc., and  experienced the same with the vistaril.  all that aside, at night it did help me sleep, help the anxiety as it&#039;s supposed too."