I have found from personal experience that the insomnia will last long after the quit but in time will subside. The best cure I have found for insomnia is limiting caffeine, absolutely no alcohol and sleep restriction therapy.
Sleep is such a healing and important process messing it up is another reason to quit the alcohol.
Sagawa agreed. "Many alcoholics and habitual drinkers suffer from insomnia," he said. "Suppressed parasympathetic nerve activity is the result of alcohol drinking. Thus, it is inferred that suppressed parasympathetic nerve activity is associated with insomnia, which includes difficulty getting to sleep, early-morning awakening, lack of a sense of deep sleep, and difficulty maintaining sleep."
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