The brand names are Atarax and Vistaril. A lot of our patients are given it for hives.(antihistamine effect) It makes you drowsy, with some saying they are knocked out for 2 days! It used to be given with Demerol injections years ago (for migraines) for nausea and the potentiator of opiate. And of course prescribed for anxiety as well as diphenhydramine (benadryl). I was told to take it for anxiety once, doc didn't want to give me benzo, I'm sure it helps people, but for me it just puts me to sleep. (hey, not anxious when I'm sleeping! lol)