Anyone have any experience... An antihistamine that is also a sedative is all I've learned so far. Used in combination with other things for pre-surgery to relieve anxiety. Just asking cause i found a whole batch of them, and just curious on how it could possibly relate to any benzo's. http://en.wikipedia.org/wiki/Hydroxyzine I doubt anyone will know, but I thought I'd throw it out there. **just kind of answered my own question with more research. Guess it provides very little sedation effects, but does come with mild relaxation.. Here's the key though.. it increases the effects of opiates while taking away the negative side effects we all don't like such as the itching. I just took one 25mg, and I'm gonna see how I feel then gonna pop some vikings.