Z drugs just don't seem to work for me, or at least they've never done much for me, Zopliclone just plain didn't work and I wasn't on any other Benzo's at the time. Zolpidem had limited medical or recreational value, but tolerance rose quicker than a quick thing being chased by a very quick fox and the WD was fekin horrible.
I fairly recently turned down a script (or I may have actually just taken the fekin things and thrown them away, I can't remember - was not in a good way at the time) for Zopliclone which some phych was insisting I needed when I started on an AD, seemed quite happy to basically tell me I really needed to be taking them, but they wouldn't give me a Diaz script for love nor money, not that I want one but they've made a point of saying so more than once.
If the anxiety is keeping you awake I'd give it a shot, but just the one 7.5mg (assume that what you have) and literally as you go to bed as its pretty short acting stuff but seems to help some people drop off.
If your getting to the point of doing enough Diaz to be getting serious rebound anxiety you should be tapering down even of only for a few days, remember that stuff still floating around in your system days after taking it, you know the score.
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