Have you at least tried Hydroxyzine HCl? Thanks to tricomb for reminding us of the benefits of hydroxyzine, I had a bottle from two years ago that I signed off as useless at the 50mg dosage (full tablet), I almost forgot about it actually, but now I realize that 10-12.5mg Hydroxyzine HCl is a great nighttime sedative, and doesn't have disgusting anticholinergenic effects, and it also metabolizes in to Zyrtec (cetirizine), so it's one of the most effective antihistamines for opiate itchies.
The 5-HT2C antagonism property of Hydroxyzine is what makes it really special, imo, only a few other drugs have that mechanism, among those few are tramadol (also a SRA), O-Desmethyltramadol, and Prozac (one of the only SSRI's that has this 5-HT2C antagonism).
This is definitely an underrated anxiolytic, everyone should try it out at a 12.5mg dosage (half of a 25mg Atarax tablet), then move on to 25mg if 12.5mg isn't effective for you. Now that I ran out of tramadol, at 50-75mg/day, which was immensely helpful for my non-compulsive OCD anxiety and for panic attack prevention, the Hydroxyzine fills a nice a gap as an antagonist at the 5-HT2C receptor, one of the only useful anxiety-based serotonin receptors, imo, which is why some people like Prozac for anxiety but get nothing from Zoloft, for example. I wouldn't dose more than 25mg hydroxyzine, too sedating.
I worry about the risk of developing tardive dyskenesia (thorazine shuffle) from Hydroxyzine, but it seems to be present in a tiny minority of people taking large doses chronically.