I had rebound anxiety from that drug, happens to a smaller percentage of people my doctor said, when he took me off. Go back to your doctor and tell him whats happening. I wouldn't suggest taking anything addictive like Xanax. There are non addictive medicines if you have anxiety problems, but detoxing off alcohol would be over by now. Good job on quitting drinking, congratulations.
I have already been taking Xanax at night for the anxiety ever since I quit drinking a couple weeks ago. Could that be part of the reason I'm having reoccurring anxiety attacks at night? Is 2 weeks long enough to become mentally dependent on Xanax?
Take a look at this thread, I think you will find a lot of answers there.
http://www.medhelp.org/posts/Alcoholism/quitting-drinking-and-tiredness/show/374585#post_9104564
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Anxiety is a very common withdrawal symptom. For many it will go away in time. If this is effecting your work then you should consider seeing a doctor for medication to help. Be honest with your doctor and do not accept "Xanax" as a medication for treatment. It is highly addictive and you wouldn't want to be trading one addiction for another. I wish you the best and congratulations on your sobriety!
Randy